54. The guide told us that an incident _____ here in 1925.
A. took place
B. was taking place
C. had been taking place
D. had taken place
正确答案是

55. _____, one must understand mathematics.
A. A good scientist
B. In order to be a good scientist
C. It's a good scientist
D. Being a good scientist
正确答案是

56. Susan had worked for three years to be a computer analyst but found her progress _____.
A. discouraging
B. to be discouraged
C. discouraged
D. to be discouraged
正确答案是

57. _____, all the quarrels came to an end.
A. The lost money was found
B. Was the lost money found
C. Because the lost money found
D. With the lost money found
正确答案是

58. He speaks mandarin with strong Sichuan accent, so he _____ brought up in Sichuan or some places close to Sichuan.
A. must have been
B. must be
C. may have been
D. can't have been
正确答案是

59. _____ today, he would get there on Sunday.
A. Was he leaving
B. Were he to leave
C. If he leaves
D. If he is leaving
正确答案是

60. His remark was _____ you might have expected.
A. that
B. which
C. whichever
D. what
正确答案是

61. My car is in _____ bad condition _____ I can't drive it.
A. such, that
B. too, to
C. so, that
D. such a, that
正确答案是

62. Few people said full attention to their health conditions _____ they were seriously ill.
A. when
B. if
C. until
D. before
正确答案是

63. -- What do you think of their _____ play?
-- I like it much better than their _____ one.
A. last, latest
B. later, last
C. later, latest
D. latest, last
正确答案是

64. _____ the 1500's _____ the first European explores the coast of California.
A. It was not until, then
B. It is until, that
C. It is not until, when
D. It is not until, that
正确答案是

65. He opened his lips as if _____ some reply.
A. making
B. having made
C. to be made
D. to make
正确答案是