9. wasn't.

10. Was.

was not

11. Was.

12. was

13. Were.

was.

14. was.

15. were.

Bài khác.

1. went

2. played.

3. ate.

4. took.

5. had.

6. Did...didn't buy.

7. didn't talk.

8. Did...didn't come.

9. Did...didn't close.

10. didn't return.

11. didn't eat.

12. didn't go.

13. didn't take.

14. didn't have

15. Was Lan and Hoa.

16. did...play.

17. did...try.

18. did...talk.

19. did...stop.

20. did...wear.

III.

1. stayed.

2. went.

3. had.

4. was.

5. visited.

6. were.

7. bought.

8. saw.

9. ate.

10. talked.

11. returned.

12. though.

13. went.

14. drove.

15. arrived.

was.

16. asked.

had.

17. said.

18. told.

19. walked.

20. saw.

TRANG 1 : 

10. was - wasn't

11. was

12. were

13. was - was

14. was 

15. was

TRANG 2 :

1. went

2. played

3. ate

4. took

5. had

6. didn't she buy

7. didn't talk

8. didn't they come

9. didn't the windows close

10. didn't return

11. didn't eat

12. didn't go

13. didn't take

14. didn't have

15. were Lan and Hoa

16. did they play

17. did Hoa try

18. talked

19. did they stopped

20. did the students wear

TRANG 3 :

1. stayed

2. went 

3. had

4. was

5. visited

6. was

7. bought

8. saw

9. ate

10. talked

11. returned

12. thought

13. went

14. drove

15. arrived - was

16. asked - had

17. said

18. told

19. walked

20. saw