— It _______ be Jack who is in the office.— No, it _______ be him. I saw him off
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— It _______ be Jack who is in the office. — No, it _______ be him. I saw him off at the airport half an hour ago.A.can’t ; can’t | B.must; can’t | C.must; mustn’t | D.may; mustn’t |
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答案
B |
解析
must表推测只用于肯定句;在否定句和疑问句中用can。 |
举一反三
— What’s the matter with Peter? — He was seen crying when he was coming out of the office. He ________ by the manager.A.may be scolded | B.should have been scolded http:/ | C.must be scolded | D.must have been scolded |
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—I didn"t go to see the doctor yesterday. —But you________. A.ought | B.ought to | C.oughted to | D.ought to have |
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.—Do you feel like ________ there or shall we take a bus? —I’d like to walk. But since there isn"t much time left, I"d rather we________ a taxi. A.walking; hire | B.to walk; hire | C.to walk; hired | D.walking; hired |
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—Miss White has decided to explore in the forest by herself. —She________ask her boyfriend to if she ________go walking in the forest.A.needn"t to; dares to | B.doesn"t need; dares | C.need not to; dare to | D.needn"t; dare |
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His failure in the exam suggested that he __________ the teacher’s instructions.A.can’t have followed | B.needn’t have followed | C.mustn’t have followed | D.shouldn’t have followed |
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