IV
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
15. Were Lan and Hoa ...?
14. Didn't have
16. What did they play ...?
17. What did Hoa try ...?
18. Who talked ...?
19. Where did they stop ...?
20. What did the students wear ...?
Study well