---
title: Why does a big river keep growing as it flows towards the sea? — Rivers, lakes and the sea up close · tree and pragmatics
description: Why does a big river keep growing as it flows towards the sea? Test 7 of lesson 64 «Rivers, lakes and the sea up close» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 7 · Rivers, lakes and the sea up close

<!-- .ven lang=en -->
Why does a big river keep growing as it flows towards the sea?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** river · **What happens:** do, keep, grow, flow · **To what, where:** big river

<!-- .vabout -->
This is test 7 of lesson 64 «Rivers, lakes and the sea up close» of the world course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/world/64-rivers-lakes-and-the-sea/#t7).

## The question {#question}

```conllu
# sent_id = question:world:64-rivers-lakes-and-the-sea:t7:1
# text = Why does a big river keep growing as it flows towards the sea?
1	Why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	does	do	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	advcl	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	big	big	ADJ	JJ	Degree=Pos	5	amod	_	_
5	river	river	NOUN	NN	Number=Sing	2	obj	_	_
6	keep	keep	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
7	growing	grow	VERB	VBG	VerbForm=Ger	6	xcomp	_	_
8	as	as	SCONJ	IN	_	10	mark	_	_
9	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	10	nsubj	_	_
10	flows	flow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	advcl	_	_
11	towards	towards	ADP	IN	_	13	case	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	sea	sea	NOUN	NN	Number=Sing	10	obl	_	SpaceAfter=No
14	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present |  | a big river |  |  |  |  | vn act-114-1 «NP V NP»: agent=Agent river=Eventuality |
| 2 | **keep** | present |  |  |  |  |  |  | tree rules |
| 3 | **grow** | gerund |  |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |
| 4 | **flow** | present | river |  |  |  |  | towards the sea | vn appear-48.1.1 «NP V»: agent=Theme |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
It melts the rocks of its bed

```conllu
# sent_id = question:world:64-rivers-lakes-and-the-sea:t7:o1:1
# text = It melts the rocks of its bed
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	melts	melt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	rocks	rock	NOUN	NNS	Number=Plur	2	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	7	nmod:poss	_	_
7	bed	bed	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **melt** | present | It | the rocks of its bed |  |  |  |  | vn other\_cos-45.4-1 «NP V NP ADJ»: agent=Patient rock=Result |

### Option 2 {#o2}

<!-- .ven lang=en -->
Fish add water as they swim

```conllu
# sent_id = question:world:64-rivers-lakes-and-the-sea:t7:o2:1
# text = Fish add water as they swim
1	Fish	fish	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	add	add	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	water	water	NOUN	NN	Number=Sing	2	obj	_	_
4	as	as	SCONJ	IN	_	6	mark	_	_
5	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	6	nsubj	_	_
6	swim	swim	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **add** *speech: assert* | present | Fish | water |  |  |  |  | vn mix-22.1-2 «NP V NP»: agent=Agent water=Patient |
| 2 | **swim** | present | Fish |  |  |  |  |  | vn run-51.3.2-1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
The sea pushes water into it

```conllu
# sent_id = question:world:64-rivers-lakes-and-the-sea:t7:o3:1
# text = The sea pushes water into it
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	sea	sea	NOUN	NN	Number=Sing	3	nsubj	_	_
3	pushes	push	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	water	water	NOUN	NN	Number=Sing	3	obj	_	_
5	into	into	ADP	IN	_	6	case	_	_
6	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **push** | present | the sea | water |  | water |  |  | vn funnel-9.3-1-1 «NP V NP PP.destination»: agent=Agent water=Theme into it=Destination |

### Option 4 · ← Mova's choice · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Tributaries keep joining it

```conllu
# sent_id = question:world:64-rivers-lakes-and-the-sea:t7:o4:1
# text = Tributaries keep joining it
1	Tributaries	tributary	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	keep	keep	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	joining	join	VERB	VBG	VerbForm=Ger	2	xcomp	_	_
4	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | present | Tributaries |  |  |  |  |  | tree rules |
| 2 | **join** | gerund | Tributaries *not said here* | it |  |  |  |  | vn mix-22.1-2-1 «NP V NP»: agent=Agent it=Patient |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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