68. I told your friend how to get to the hotel, but perhaps I __________ have driven her there. (2007陕西卷)

A. could                          B. must

C. might                          D. should

69. — What does the sign over there read?

—“No person __________ smoke or carry a lighted cigarette，cigar or pipe in this area.” (2007四川卷)

A. will                             B. may

C. shall                            D. must

70. — My cat’s really fat.

— You __________ have given her so much food. (2007浙江卷)

A. wouldn’t                     B. couldn’t

C. shouldn’t                     D. mustn’t

71. —What do you think we can do for our aged parents?

—You __________ do anything except to be with them and be yourself. (2007重庆卷)

A. don’t have to                 B. oughtn’t to

C. mustn’t                         D. can’t

【答案与详解】

1—46 略

47. B。比较：needn’t have done意为“本来不必做某事”，may not have done意为“(过去)可能没有做某事”，shouldn’t have done意为“本来不应该做某事”(must表推测时不用于否定式)。根据句意，显然只能选B。

48. D。将四个选项分别置于句中，比较句意的通顺性，可知填should最佳。

49. A。Shall I…? 意为“要我……吗？”，又如：Shall I help you? 要不要我帮你的忙? Do you want a bath at once, or shall I have mine first? 你马上洗澡还是我先洗?

50. C。因为她“不会”唱歌，所以我才没有邀请她去参加晚会。句中填can’t最通顺。

51. B。以Must开头的疑问句，在作肯定回答时通常要用must或have to，如：Must we bring our passports with us? 我们必须带护照吗?—Yes, you must. 是的，你们必须要带。

52. A。第一空填can，表示推测——can用于肯定句表示推测，主要指理论上的推测，常可译为“有时会”，又如：Children can be very trying. 孩子有时很令人头疼。In winter the winds can be pretty cold. 冬天风有时很冷。第二空填have to指客观上的要求使得飞行员不得不这样做。

53. D。must在此表示坚持或固执，又如：After I gave her my advice，she must go and do the opposite. 在我给她出主意之后她偏反着干。

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