1. learning English 4 years ago

2. given up smoking since last year

3. wrote to Mai a month ago

4. did you start to learn French?

5. were finished on time yesterday.

6. was sold for me by a friend last week.

7. my teeth was taken out by the dentist three days ago.

8. new carpet is being fitted by them tomorrow.

9. has been postponed by the club.

10. the Browns live in this town ?

11. finish her work as quickly as he did

12. didn't eat too much candy, I wouldn't be overweight

13. bringing your sister to the party

14. my brother nor I are good at drawing

15. was advised to stop smoking by the doctor

16. prevent them finishing their game of badminton

17. understand what you said

18. the students two hours to correct their exercise

19. checking all the doors before going to bed

20. is the largest city in Vietnam

1, We started learning English 4 years ago.

2, Ly's father has given up smoking since last year.

3, The editor last wrote to Mai a month ago.

4, How long ago did you learn Spanish?

5, Their exercises are finished on time yesterday.

6, A rock ticket was sold me by a friend last week.

7, One of my teeth was taken out by the dentist three days ago.

8, Our new carpet are being fitted tomorrow.

9, The match has been postponed by the club.

10, When did the Browns live in this town?

11, She didn't finish work as quickly as he did.

12, If I didn't eat too much candy, I wouldn't be overweight.

13, I suggest that you should bring your sister to the party.

14, Neither I nor my brother is good at drawing.

15, He was advised to stop smoking by the doctor. 

16, The heavy rain preveted them from finishing their game of badminton.

17, I could hardly understand what you said.

18, It took the students two hours to correct their exercises.

19, My father suggested checking all the doors before going to bed.

20, Ho Chi Minh City is the largest city in Vietnam.