Đáp án: 

18.A

19.A

20.C

IV

1.(1)from; (2)to

2.(3)in; (4)on

3.(5)on

4.(6)it

5.(7)in

6.(8)at; (9) on

7.(10)next to

V

1.always → alway

2.on → by

3.tall → taller

4.to go → go to

5.watch → watching 

6. with → by

7.childs → children

8.isn't → doesn't

9.much → many

10.tomatos → tomatoes

VI

1. is go

2. are not watching

3. help

4.What are you doing và are visit  

5.is not has

6.rans

VII

1. What time get up moring, Nga?

2.You can games afternoon but must homework evening

3.Lan walk ride bike school.

4.When it hot, we often go swimming

5.What there front your house?

6.Where sit your father now?

7. my classes start at seven o'clock morning

8.I not often go swimming friends

16B

17B

18A

19A

20D

IV

1from...to

2at/on

3for

4with

5in

6at/on

7between

V

1for -> at

2goes->go

3tall->taller

4to go -> go

5watch-> watching

6with->by

7childs->children

8isn't->doesn't

9much-> many

10tomatos->tomatoes

VI

1go

2aren't watching

3help

4doing

   are visiting

5doesn't have

6rains

VII

1What time does Nga get up in the morning

2You can play games in the afternoon but you do homeword im the evening

3Does Lan walk or ride her bike to school

4When it's hot we often go swimming

5What is there in front of your house

6Where is your father sitting now

7My class starts at seven in the morning

8 I don't often go swimming with friends