48. -Help me with the door. It _____.

　 　-It _____ by the monitor.

A. won’t lock…has been locked　 　　　　　　　　 B. won’t be locked…has locked

C. won’t lock…has locked　 　　　　　　　　　　　　 D. won’t be locked…has been locked

47. Shortly after we _____ , a waiter came over to our table with a smile. A. seated　　 　　　　　 B. were seated　　 　　　 C. sat ourselves　　 　　　 D. took place

46. The number of deaths from heart disease will be reduced greatly if people _____ to eat more fruit and vegetables. 　 A. persuade　　 　　　　 B. will persuade　 　　　 C. be persuaded　　 　　　 D. are persuaded

45. When Jack arrived he learned Mary ___ for almost an hour.

A. had gone　　 　　　　　　　 B. had set off　 　　　　　 C. had left　 　　　　　　　 D. had been away

44. As I ___ the next day, I went to bed early on Saturday evening.

A. was leaving　 　　 B. have to leave　 　　　　　　　 C. will leave　 　　　　　　 D. left

43. We were all surprised when he made it clear that he ___ office soon.

A. leaves　 　　　　　　 B. would leave　 　　　　 C. left　 　　　　　　　　　　　　　　 D. had left

42. -Come in, Peter. I want to show you something.

-Oh, how nice of you. I ___ you ___ to bring me a present.

A. never think; are going　　 　　　　　　　　　　　　 B. never thought; were going

C. didn’t think; were going　 　　　　　　　　　　　 D. hadn’t thought; were going

41. -Bob has just arrived from London.

-When ___ he ___ back?

A. did; come　 　　　　 B. has; come　 　　　　　　 C. does; come　 　　　　　 D. was; come

40. I wonder how long ago this university ____.

A. has began　 　　　　 B. begins　 　　　　　　　　 C. began　 　　　　　　　　 D. had began

39. We won’t go unless you ___ soon.

　A. coming　 　　　　　 B. came　 　　　　　　　　　 C. will come　 　　　　　　 D. come