—Is Jack on duty today?—It __________ be him. It’s his turn tomorrow. A．mustn’t
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—Is Jack on duty today?
—It __________ be him. It’s his turn tomorrow. | A．mustn’t | B．won’t | | C．can’t | D．needn’t |
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答案
| C。 |
解析
| 根据下文的It’s his turn tomorrow可知，Jack今天“不可能”(can’t)当班，故应选C。 |
举一反三
— Could I have a word with you, mum?
— Oh dear, if you __________. |
There’s no light on — they __________ be at home. | A．can’t | B．mustn’t | | C．needn’t | D．shouldn’t |
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You know he is not going to let us leave early if we __________ get the work done. | A．can’t | B．may not | | C．shouldn’t | D．mustn’t |
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The weather turned out to be fine yesterday. I __________ the trouble to carry my umbrella with me. | A．should have taken | B．could have taken | | C．needn’t have taken | D．mustn’t have taken |
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The teacher __________ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose. | A．should | B．can | | C．would | D．must |
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