33. The white building ______ many years ago.

A. builds　　　 B. was built　 　 C. built　　　　　 D. is built

32. -Could you tell me ______last night?

-Err, I was watching TV at home.

　　 A. what you were doing　　　　 B. what were you doing

C. what you are doing　　　　　　　　　　　 　 D. what are you doing

31. We ______ English for about three years since we came to middle school.

　　　 A. learned　　　　　　　 B. have learned　　　 C. learns　　　　 　　　 D. will learn

30. - How many rooms has John cleaned?

- I’m not sure. When I saw him, he ______ his second one.

A. will clean 　 B. was cleaned　　　 C. was cleaning 　　　　　 D. is cleaning

29. Mrs. Green is out. I have to ______ her baby.

A. look around 　　 　　　　　　　　　　 　　　 B. look up

C. look for 　　　　　　　　　　　　　　　　 　　　 D. look after

28. -What did you do last weekend?

- I ______ shopping with my friends.

A. go　　　 　　　　　　　 B. went　 　　　　　　　 C. will do 　　　 　　 　　　 D. have gone