---
title: Brushing your teeth — how Mova does on the tests · Everyday
description: Lesson 73 of the everyday course of Mova's primary school: 13 of 19 tests right, exam 2 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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[home](https://md.mova.elamur.ai/free/en/) / [at school](https://md.mova.elamur.ai/free/en/school-run/) / [Everyday](https://md.mova.elamur.ai/free/en/school-run/everyday/) / 73

# Brushing your teeth

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**Tests:** 13 of 19 right · **Exam:** 2 of 4 right · **Kind:** ★ · **Understood:** 16 of 23 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 73 of the everyday course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: [the lesson in the corpora](https://md.mova.elamur.ai/free/en/corpora/school/everyday/73-brushing-your-teeth/).

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Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/).

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### Test 1 · ★ · right ✓ {#t1}

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A girl in Florida brushes very hard with a hard brush to get her teeth extra clean. What would probably happen?

- **1.** Nothing, hard brushing is the best way — no support
- **2.** Her teeth would never get holes again — score -3
- **3.** Her teeth would become much whiter and stay that way for ever — no support
- **4.** Her gums would get sore and her teeth would wear — **← Mova's choice** · **✓ the right answer** · score 2

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 4 with score 2, against -3 for the next best. Its support: lesson 62, line 20: «Rabbit teeth keep growing all their lives and are worn down by chewing hay.», reached through the option's own match among the sentences about the question's things. What matched: the same action «wear down» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t1/)

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### Test 2 · ★ · wrong ✗ {#t2}

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Which is true about brushing at night?

- **1.** It matters least because you do not eat anything at night while you sleep — **← Mova's choice** · no support
- **2.** It is needed only for grown-up teeth — no support
- **3.** It is only needed if you ate sweets — no support
- **4.** It matters most because the mouth has less spit while you sleep — **✓ the right answer** · no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t2/)

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### Test 3 · ★ · wrong ✗ {#t3}

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After brushing, a boy fills his mouth with water and rinses five times. What is he losing?

- **1.** The colour of his toothpaste — **← Mova's choice** · score 7
- **2.** Nothing at all, because rinsing well is always the best thing — score 7
- **3.** The fluoride that would keep protecting his teeth — **✓ the right answer** · score 1
- **4.** The plaque he has just cleaned off — no support

<!-- .why -->
**Why:** It took the question to ask what it is done to. It chose option 1 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 53, line 5: «A boy in Denver is about to throw his controller when he loses a game; instead he puts it down, takes five slow breaths, and a minute later he can laugh about…», reached through the option's own match among the sentences about the question's things. What matched: the same action «lose» (+5); the same doer «boy» (+2). The right option, 3, scored 1. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t3/)

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### Test 4 · ★ · right ✓ {#t4}

<!-- .q -->
How often should a toothbrush usually be replaced?

- **1.** About every three months, or when the bristles splay — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Once a year, on your birthday — no support
- **3.** Every week, after each Sunday — no support
- **4.** Only when it breaks in two or the handle snaps off — no support

<!-- .why -->
**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t4/)

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### Test 5 · ★ · right ✓ {#t5}

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Why should two sisters never use the same toothbrush?

- **1.** One of them might use too much toothpaste — no support
- **2.** It wears out twice as fast and then stops cleaning at all — score 4
- **3.** It can pass germs and blood from one mouth to the other — **← Mova's choice** · **✓ the right answer** · score 14
- **4.** Their teeth are different sizes — no support

<!-- .why -->
**Why:** It took the question to ask why something happens (its cause). It chose option 3 with score 14, against 4 for the next best. Its support: lesson 73, line 16: «A toothbrush is never shared, because it can carry germs and blood from one mouth to another.», reached through the cause of the sentence the question matched. What matched: the same thing acted on «germs» (+6); the same doer «toothbrush» (+5); the same place «one mouth» (+4). Against it: a different action (counts against) (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t5/)

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### Test 6 · ★ · wrong ✗ {#t6}

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A boy in Glasgow has breakfast with a big glass of orange juice and wants to brush right after. What is wiser?

- **1.** Skip brushing in the morning altogether — **← Mova's choice** · no support
- **2.** Drink more juice so the acid gets weaker and weaker — no support
- **3.** Brush much harder than usual after the juice — no support
- **4.** Brush before breakfast or wait about an hour after — **✓ the right answer** · no support

<!-- .why -->
**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t6/)

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### Test 7 · ★ · right ✓ {#t7}

<!-- .q -->
What makes the holes in teeth?

- **1.** Acid made by plaque germs feeding on food — **← Mova's choice** · **✓ the right answer** · score 9
- **2.** Cold air getting into the mouth when you breathe — no support
- **3.** Drinking far too much plain water every day — no support
- **4.** Brushing the teeth too often, more than twice a day — score 7

<!-- .why -->
**Why:** It took the question to ask who or what does it. It chose option 1 with score 9, against 7 for the next best. Its support: lesson 73, line 1: «After you eat, tiny germs in your mouth feed on bits of food and make a sticky layer called plaque; the plaque makes acid that slowly eats holes in your teeth.», reached through the same lesson line as the sentence the question matched. What matched: the same action «feed» (+4); it fills the role the question asks for (+3); the same doer «tiny germs» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t7/)

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### Test 8 · ★ · right ✓ {#t8}

<!-- .q -->
Why do people brush the tongue?

- **1.** To remove germs that cause bad breath — **← Mova's choice** · **✓ the right answer** · score 9
- **2.** To help the taste buds grow back faster — no support
- **3.** To clean food from between the back teeth — no support
- **4.** To make the tongue stronger and longer — score 2

<!-- .why -->
**Why:** It took the question to ask why something happens (its cause). It chose option 1 with score 9, against 2 for the next best. Its support: lesson 73, line 13: «Germs on the tongue cause bad breath, so the tongue is brushed gently too.», reached through the cause of the sentence the question matched. What matched: the same doer «germs» (+5); the same action «cause» (+4). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t8/)

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### Test 9 · ★ · wrong ✗ {#t9}

<!-- .q -->
A little girl likes to swallow her sweet toothpaste. What should she learn?

- **1.** It is fine because it tastes nice — no support
- **2.** Toothpaste is for cleaning and should be spat out — **✓ the right answer** · no support
- **3.** Swallowing it makes the teeth stronger from the inside — **← Mova's choice** · score 6
- **4.** She should swallow it only at night — score 5

<!-- .why -->
**Why:** It took the question to ask what it is done to. It chose option 3 with score 6, against 5 for the next best. Its support: lesson 73, line 3: «Toothpaste has fluoride, which makes teeth stronger: spit the toothpaste out, but do not rinse with lots of water, so a little fluoride stays on the teeth.», reached through the same lesson line as the sentence the question matched. What matched: the same action «make» (+2); it fills the role the question asks for (+2); the same thing acted on «teeth» (+1); the same property (+1). The right option, 2, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t9/)

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### Test 10 · ★ · wrong ✗ {#t10}

<!-- .q -->
brushed, now rinse with water yeah?

- **1.** Yes, always rinse really well with water after — **← Mova's choice** · score 3
- **2.** No, spit but do not rinse, so fluoride keeps working — **✓ the right answer** · no support
- **3.** Yes, and swallow the rest of it — no support
- **4.** Yes, rinse twice with mouthwash — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 1 with score 3, the only option with support. Its support: lesson 28, line 5: «After touching farm animals, at a petting farm or anywhere, always wash your hands with soap and water, because animals can carry germs such as E. coli that ma…», reached through the remembered sentence the question matched. What matched: the same circumstance (+4); the same property (+1). Against it: a different action (counts against) (-2). The right option, 2, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t10/)

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### Test 11 · ★ · right ✓ {#t11}

<!-- .q -->
too tired, i'll brush in the morning instead of tonight

- **1.** No, the bedtime brush is the most important one — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Yes, the morning brush is enough to last the whole day — no support
- **3.** Yes, if you ate nothing sweet all day after school — no support
- **4.** Yes, teeth rest at night anyway, so they are safe — no support

<!-- .why -->
**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t11/)

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### Test 12 · ★ · right ✓ {#t12}

<!-- .q -->
can i use my sisters toothbrush, mine's gone manky

- **1.** No, never share, it carries germs and blood — **← Mova's choice** · **✓ the right answer** · score 6
- **2.** Yes, family can always share brushes, it's fine — no support
- **3.** Yes, if she says it is fine — no support
- **4.** Yes, if you rinse it first — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 1 with score 6, the only option with support. Its support: lesson 73, line 16: «A toothbrush is never shared, because it can carry germs and blood from one mouth to another.», reached through a sentence linked to the one the question matched. What matched: the same action «carry» (+2); the same doer «toothbrush» (+2); the same thing acted on «germs» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t12/)

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### Test 13 · ★ · right ✓ {#t13}

<!-- .q -->
just had OJ, brush now?

- **1.** Brush only the front teeth now — score 4
- **2.** Brush right now and scrub hard — no support
- **3.** Never brush after any drink — no support
- **4.** Wait about an hour, juice softens the enamel — **← Mova's choice** · **✓ the right answer** · score 5

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 4 with score 5, against 4 for the next best. Its support: lesson 73, line 18: «Acidic drinks like orange juice soften the tooth enamel for a while, so you brush before breakfast or wait about an hour after it before brushing.», reached through a sentence linked to the one the question matched. What matched: the same property (+3); the same action «wait» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t13/)

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### Test 14 · ★ · right ✓ {#t14}

<!-- .q -->
skipped brushing for like weeks, its fine right

- **1.** Yes, if you rinse with juice or fizzy pop instead — no support
- **2.** Yes, teeth clean themselves while you eat — no support
- **3.** No, plaque makes holes that hurt and need fillings — **← Mova's choice** · **✓ the right answer** · score 11
- **4.** Only adult teeth can get holes — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 3 with score 11, the only option with support. Its support: lesson 73, line 7: «A girl in Glasgow went to bed after sweets without brushing most nights; at her check-up she had three cavities that needed fillings, one after another.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «three cavities» (+5); the same action «need» (+3); the same thing acted on «fillings» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t14/)

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### Test 15 · ★ · right ✓ {#t15}

<!-- .q -->
my back tooth hurts when i eat sweet stuff

- **1.** Tell a parent so you can see the dentist soon — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Just chew on the other side forever — no support
- **3.** Wait until the tooth falls out by itself n it'll stop — no support
- **4.** Put sugar on it to calm it down — no support

<!-- .why -->
**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t15/)

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### Test 16 · ★ · right ✓ {#t16}

<!-- .q -->
baby teeth fall out anyway so why bother brushing em

- **1.** It does not matter until you are 12 — no support
- **2.** Brushing baby teeth makes them fall faster — score 2
- **3.** Baby teeth cannot get holes at all — score -2
- **4.** Rotten baby teeth hurt, get infected and can harm the new ones — **← Mova's choice** · **✓ the right answer** · score 3

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 4 with score 3, against 2 for the next best. Its support: lesson 73, line 21: «Baby teeth can get holes too; a rotten baby tooth hurts, can get infected and can harm the grown-up tooth growing under it.», reached through the option's own match among the sentences about the question's things. What matched: the same action «harm» (+2); a different thing acted on (counts against) (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t16/)

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### Test 17 · ★ · right ✓ {#t17}

<!-- .q -->
did u hear Jake had ALL his teeth pulled out cos he never brushed, like every single one lol, what's the lesson

- **1.** Brush once a week and it is enough — no support
- **2.** Brush twice a day, or holes grow and teeth can be lost — **← Mova's choice** · **✓ the right answer** · score 8
- **3.** Only sweets matter, brushing does nothing — no support
- **4.** Teeth fall out anyway, so brushing does not matter — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 2 with score 8, the only option with support. Its support: lesson 73, line 6: «A boy in Texas hardly brushed for a year; a hole grew in a back tooth, it began to throb at night, and the dentist had to take the tooth out.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «hole» (+5); the same action «grow» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t17/)

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### Test 18 · ★ · right ✓ {#t18}

<!-- .q -->
my cousin says if u swallow toothpaste ur stomach explodes, true?

- **1.** False, eating toothpaste is good for you — no support
- **2.** True, but only with minty toothpaste — no support
- **3.** True, one swallow makes your stomach burst — no support
- **4.** Exaggerated; just spit it out, as too much fluoride is not good — **← Mova's choice** · **✓ the right answer** · score 6

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 4 with score 6, the only option with support. Its support: lesson 73, line 17: «Toothpaste is spat out, not swallowed, because too much swallowed fluoride is not good for the body.», reached through a sentence linked to the one the question matched. What matched: the same property (+3); the same doer «swallowed fluoride» (+2); the same light verb (be, have, do, get, go) (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t18/)

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### Test 19 · ★ · wrong ✗ {#t19}

<!-- .q -->
everyone's saying Ella's breath stinks cos she never brushes, should i tell people

- **1.** Yes, everyone deserves to know — **← Mova's choice** · score 2
- **2.** Yes, but only in a group chat — no support
- **3.** No, it's unkind gossip, and it may not even be true — **✓ the right answer** · no support
- **4.** Yes, and leave a toothbrush on her desk so she gets the hint — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 1 with score 2, the only option with support. Its support: lesson 52, line 2: «Everyone knows how it feels to be left out, so a good friend notices a child standing alone and invites them in: «Do you want to play with us?»», reached through the option's own match among the sentences about the question's things. What matched: the same action «know» (+2). The right option, 3, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/t19/)

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### Exam question 1 · formal language · wrong ✗ {#e1}

<!-- .q -->
Identify the principal reason for which the bedtime brushing of teeth is deemed the most important of the day.

- **1.** Germs are asleep at night and easily removed — **← Mova's choice** · no support
- **2.** Teeth are softer at night and easier to clean — no support
- **3.** Less saliva is present during sleep to protect the teeth — **✓ the right answer** · no support
- **4.** Toothpaste is effective solely in the dark — no support

<!-- .why -->
**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/e1/)

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### Exam question 2 · formal language · wrong ✗ {#e2}

<!-- .q -->
Which of the following most accurately characterises the recommended conduct immediately subsequent to brushing?

- **1.** The teeth are brushed a second time without toothpaste — score 6
- **2.** The toothpaste is swallowed so as to protect the teeth — **← Mova's choice** · score 8
- **3.** The toothpaste is expelled but the mouth is not rinsed at once — **✓ the right answer** · no support
- **4.** The mouth is rinsed thoroughly with abundant water on several occasions — no support

<!-- .why -->
**Why:** It took the question to ask who or what does it. It chose option 2 with score 8, against 6 for the next best. Its support: lesson 73, line 11: «After brushing you spit out the toothpaste but do not rinse straight away, so the fluoride keeps protecting the teeth.», reached through the same lesson line as the sentence the question matched. What matched: the same action «protect» (+4); the same thing acted on «teeth» (+4). The right option, 3, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/e2/)

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### Exam question 3 · formal language · right ✓ {#e3}

<!-- .q -->
Select the response consistent with the established facts concerning the origin of dental caries.

- **1.** Brushing too often wears holes in the teeth — no support
- **2.** Teeth wear thin of their own accord with advancing age — no support
- **3.** Germs feeding on food form plaque, which produces acid — **← Mova's choice** · **✓ the right answer** · score 3
- **4.** Cold drinks crack the enamel and so form holes — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 3 with score 3, the only option with support. Its support: lesson 31, line 3: «Germs are a hidden danger. You cannot see the bacteria on raw chicken, but they can make you ill, so you wash your hands with soap and keep raw meat away from…», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+2); a different thing acted on (counts against) (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/e3/)

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### Exam question 4 · formal language · right ✓ {#e4}

<!-- .q -->
Ascertain the approximate interval at which a toothbrush ought to be replaced.

- **1.** Approximately every three months — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Approximately every three years — no support
- **3.** Approximately every three days — no support
- **4.** Only when the handle breaks — no support

<!-- .why -->
**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/everyday/73-brushing-your-teeth/e4/)

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<!-- pn -->
- ← previous: [72. Keeping garden wildlife safe](https://md.mova.elamur.ai/free/en/school-run/everyday/72-keeping-garden-wildlife-safe/)
- next →: [74. Flossing and caring for your teeth](https://md.mova.elamur.ai/free/en/school-run/everyday/74-flossing-and-caring-for-teeth/)
- ↑ back to [Everyday](https://md.mova.elamur.ai/free/en/school-run/everyday/)