1. She didn't buy a new ruler yesterday.
2. He didn't talk with his parents about his vacation in Da Lat last year.
3. They didn't come to school yesterday.
4. The window didn't close yesterday.
5. We didn't return at home at 7pm last Monday.
6. She didn't eat fish and crab yesterday.
7. Lan didn't go Ho Chi Minh city two years ago.
8. My parents didn't take to Vung Tau last week.
10. We don't have alot of friends in Ha Noi.
11. Did Lan and Hoa in your school two years ago.
12. What did they play last week?
13. What did Hoa try on yesterday?
14. Who did talk about to the film on TV last Monday?
15. Where did they stop on their way back last Sunday?
16. What did the student wear at school two years ago?
17. Where did you put the cake yesterday?
18. What time did you leave home for school yesterday?
19.What did Ba recceive from Liz last week?