61. ---I have got to go now.

　 ---Must you? I _____ you could stay for dinner with us. (2009重庆卷)

　 A. think　 B. thought　 C. have thought　 D. am thinking

60. –Do you want a lift home?

　 --It’s very kind of you. But I have to work late in the office. I overslept this morning because my alarm clock ______. (2009江西卷)

　 A. doesn’t go off　 B. won’t go off　 C. wasn’t going off　 D. didn’t go off

59. –What is the price of petrol these days? (2009江西卷)

　 --Oh, it _____ sharply since last week.

A. is raised　 B. has risen　 C. has arisen　 D. is increased

58. Edward, you play so well. But I _____ you played the piano. (2009全国卷)

　 A. didn’t know　 B. hadn’t known　 C. don’t know　 D. haven’t known

57. His sister left home in 1998, and _____ since. (2009全国卷)

　 A. had not been heard of　 B. has not been heard of　 C. had not heard of　 D. has not heard of

56. When I talked with my grandma on the phone, she sounded weak and by the time we _____ up, her voice had　 been …(2009北京卷)..

　 A. were hanging　 B. have hung　 C. hung　 D. wound hang

55. The way the guests _____ in the hotel influenced their evaluation of the services　 (2009北京卷)

　 A. treated　 B. were treated　 C. would treat　 D. would be treated

54. Scientists have many theories about how the universe ____ into being. (2009北京卷)

　 A. came　 B. was coming　 C. had come　 D. would come

53. ---What do you think of the movie?

　 --It’s fantastic. The only pity is that I _____ the beginning of it. (2009浙江卷)

　 A. missed　　 B. had missed　　 C. miss　　 D. would miss

52. Over the past decades, sea ice _____ in the Arctic as a result of global warming. (2009浙江卷)

　 A. had decreased　 B. decreased　 C. has been decreasing　 D. is decreasing