Bài I :
1 - d 2 - c
Bài II:
1 - a
2 - e
3 - g
4 - b
5 - d
6 - h
7 - c
8 - f
Bài III :
1. haven't seen
2. called
3. has read
4. haven't begun
5. met
6. has been
7. haven't seen
8. did your father give up
9. has taken
10. do you wash
Bài IV :
1. I buy a laptop but I don't use it