IV.
1. B => looking after
2. D => the following year
3. C => bỏ
4. B => don't
5. A => amazed
6. B => if
V.
1. C
2. B
3. D
4. A
5. C
VI.
1. It's important to keep the environment clean.
2. If Lien were not tired today, she wouldn't go to bed early.
3. Young children should take part in those outdoor activities.
4. The bills have to be paid before the twentieth of the month.
5. The picture which was painted by Tuan Hiep is being shown in an exhibition
VII.
1. C
2. D
3. B
4. C
5. B

IV.

1.A→looking after

2.D→the next year

3.C→bỏ

4.B→don't

5.A→amazed

6.B→if

V.

1.C

2.B

3.D

4.D

5.C

VI.

1.It's very important to keep the environment clean.

2.If Lien were very tired today,she went to bed early.

Hoặc "If Lien weren't tired today,she wouldn't go to bed early"

3.Young children should take part in those outdoor activities.

4.The bills have to be paid before the twentieth of the month.

5.The picture which Tuan Hiep painted is being shown in an exhibiton.

VII.

1.C

2.D

3.B

4.C

5.B