40. A new school ______ in our city last year.

　 A. built　　 B. was built　　 C. has built　　 D. is building

39. –What did Mary do last Sunday? –She ______ her homework.

　 A. did　　 B. do　　 C. was doing　　 D. have done

38. Don’t ______ too late, or you’ll feel tired in tomorrow’s classes.

　 A. wake up　　 B. stay up　　 C. look up　　 D. give up

37. He never told us why he was late, ______?

　 A. wasn’t you　 B. didn’t you　 C. did you　 D. have you

36. There _______ nothing wrong with your computer.

　 A. is　 B. are　　 C. was　 D. were

35. --______ do you have a talk with your teacher, Tom?

　 -- Once a week.

　 A. How long　 B. How soon　 C. How far　 D. How often

34. Don’t forget to ______ “Thank you” when someone has helped you.

　 A. speak　　 B. tell　　 C. talk　　 D. say

33. –Let’s go singing tonight?

　 --Sorry, I ______. I have to look after my sister.

　 A. mustn’t　　 B. may not　　 C. can’t　　 D. needn’t

32. I usually sleep with the window open ______ it’s very cold.

　 A. until　　 B. unless　　 C. as　　 D. if

31. _________ bad cold you’ve got!

　 A. How　　 B. How a　　 C. What　　　 D. What a