1. It's exciting to study English

2. She asked Tom why he didn't take a bus to school

3. Your brother uses the internet every day, doesn't he

4. We wish the air in our city wasn't dirty ( ko chắc lắm;L)

1. It's very exciting to study English.

2. She asked Tom why he didn't take a bus to school

3. Your brother uses the internet every day, doesn't he?

4. We wish the air in our city were not dirty

1. False
2. True
3. True
4. True

1. a
2. d
3. c
4. b
5. a
6. b

relaxing

luckily

enjoyment

picnickers

enter

writing

II,

1, B. about -> of (consist of (v) bao gồm)

2, A, much -> many

III, 

1, has lived/has been living

2, will break

3, was questioning

4, saw

c - c - d - b - a - b - d - b - d - b

1. I wish I didn't live far from my school.

2. Mrs. Hoa asked her son if he want her to help him to do that work now.

3. He was made to study hard for the exam by his parents

4. I have not seen him since last week

1. If Hoang weren't lazy, he could learn by heart.
2. If I got sick, I would go to the doctor.
3. If she finished work early, she wouldn't stay at home.
4. If I found her address, I would send her an invitation.
5. If I were rich, I could buy this car.
6. If my friends came to my hometown, we would have great.
7. If I visited them, they wouldn't be sad.
8. If you weren't sure to leak it, I would tell you a secret.