21. She (not buy).................................. a new ruler yesterday.

22. He (not talk)................................. with his parents about his vacation in Da Lat last year.

23. They (not come).................................. school yesterday?

24. The windows (not close)............................ yesterday?

25. We (not return)...................................... at home at 7 pm last Monday.

26. She (not eat)............................................. fish and crab yesterday.

27. Lan (not go)................................. Ho Chi Minh city two years ago.

28. My parents (not take)................................. to Vung Tau last week.

29. We (not have)...................................... a lot of friends in Ha Noi.

30. Lan and Hoa (be).................................... your school two years ago?

31. What they (play)............................... last week?

32. What Hoa (try)...................................................... on yesterday?

33. Who (talk).................................... to about the film on TV last Monday?

34. Where they (stop)..................................... on their way back last Sunday?

35. What the student (wear)...................................... at school two years ago?

36. Where you (put) the cake yesterday?

37. What time you (leave).................................. home for school yesterday?

38. What Ba(receive)................................. from Liz last week?

39. How long he (do)............................ this hat yesterday?

40. What time you (go)................................... to bed last night?

41. You (go)................................... to Dalat for last tet vacation/

42. He (have)................................... a lot of friends in Ho Chi Minh city 3 years ago?

43. His uncle (take)............................. him to see Tri Nguyen aquarium last week?

44. Liz (buy)........................... a lot of souvenirs yesterday?

45. They (put)........................... the fish in the big bag last Sunday?