II. 

1. have

2. is going to start - Don't miss

3. are wasting

4. has just made

5. Have ... closed - am closing

6. went

7. met

8. didn't enjoy

9. Did ... go

10. was sitting - saw

11. were walking - began

12. was writing - rang

13. went - had done

14. told - hadn't met

15. said - had already seen

16. was leaving - arrived

III. 

1. I haven't met him for two weeks.

2. He hasn't written to me since September.

3. When didn't you see Mary?

4. How long have you listened to classical music?

5. After they had provided food, they cleaned up the debris.

6. He will be the next space tourist in the future.

8. I used to go fishing on the weekend when I lived on the farm.

9. My family used to stay with our grandparents in the countryside.

10. It is dangerous to ride your bike fast.

11. It is funny to watch the circus on the television. 

12. Thu is too happy to win the competition again.

Chúc bạn học tốt !!!

1.have 2.starts/ Don't miss 3.are wasting. 4.has just made. 5.Have you closed 6.went. 7.met. 8.didn't enjoy 9.Did you go. 10.was sitting/saw. 11.were walking/began. 12.was writing/rang. 13.went/had done 14.told/hadn't met. 15.said/has already been 16.was leaving/arrived III. 1.I haven't met him for two years 2.He hasn't written to me since September 3.when did you see Mary 4.How long have you listened to classical music 5.After they had provided food, they cleaned up the debris 6.He will be able to become the next space tourist in the future 8.I used to go fishing on the weekend when i lived on the farm 9.My family used to stay with our grandparents in the countryside 10.It is dangerous to ride your bike fast 11.It is funny to watch the circus on television 12.Thu is happy to win the competition again 8.I used kend when i lived on the farm