Bài III:
1. doesn't have
2. comes/ is staying
3. don't drive/ go
4. is talking
5. often build/ built
6. is coming
7. are going to buy
8. stops

Bài IV:
1. Hoa will -> will Hoa
2. seeing -> to see
3. in -> on
4. two -> twenty
5. don't -> bỏ
6. has -> have
7. are -> bỏ
8. goes -> go
9. talk -> talking
10. in -> on

Bài V

Bài VI.
1. B
2. D
3. C
4. C
5. C
6. B
7. A
8. A
9. B
10. C 
11. B
12. D

Bài VII.
1. peaceful
2. beautiful
3. friendly
4. sunny
5. actor
6. apologized
7. beautifully
8. building
9. business
10. collection

* Bài cuối :
1. My kitchen is smaller than yours.
=> Your kitchen is bigger than mine
2. The children liked to walk in the rain.
=> The children enjoyed walking in the rain
3. My grandmother is very old. She can’t work now. 
=> My grandmother is too old to work now
4. The children couldn’t go swimming because the sea was rough.
=> The sea was so rough for children to go swimming
5. Hung is taller than Ba.
=> Ba isn't as tall as Hung
6. We learned this after a long time.
=> It took us a long time to learn this
7. Peter is too young to see the horror film.
=> Peter is not old enough to see horror film
8. What’s your date of birth?
=> When is your birthday?