51. It’s high time we _________ to the theatre.

　A. will go　　 B. shall go　　 C. are going to　　 D. went

50. _________ is no possibility _________ Bob can win the first prize in the match.

　A. There; whether　　　　 B. It; that

　C. There; that　　　　　　 D. It; whether

49. The theory he stuck __________ to be right.

　A. to prove　　 B. to proved　　　 C. prove　　　 D. proved　

48. He sat in the classroom with his eyes __________ on the blackboard.

　A. fixed　　　 B. fixing　　　 C. were fixed　 D. were fixing　　

47. He paid for a seat, when he ________ have entered free.

　A. could　　　 B. would　　　 C. must　　　 D. need

46. It doesn’t matter much ________ you have learned but __________ you have tried your best to learn.

　 A. what, what　 B. that, that　 C. whether, what　　 D. what, whether

45. – We are really making great progress in exploring space.

　 -- Imagine how pleased the whole is ________ the news!

　 A. hearing　　 B. to hear　　 C. heard　　 D. to be hearing

44. – What will you cover in your report?

　 -- __________.

　 A. I will visit the astronauts

　 B. The designer will explain his design

　 C. The successful launching of Shenzhou VI

　 D. The astronauts will tell us what they saw

43. I soon found that the work I was doing had already been done by someone else-- _________, I was wasting my time.

　 A. in fact　　　　 B. in other words　　 C. in a word　　　 D. as a result

42. – What’s the matter, doctor?

　 -- Nothing serious. Take this medicine according to the _____, and you’ll get better soon.

　 A. introductions　　 B. explanations　　 C. suggestions　 　D. instructions