There’s no light on — they __________ be at home. A．can’tB．mustn’tC．needn’tD．sho

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There’s no light on — they __________ be at home. A．can’tB．mustn’tC．needn’tD．sho

题型：不详难度：来源：
There’s no light on — they __________ be at home.
A．can’tB．mustn’t
C．needn’tD．shouldn’t

答案
A。
解析
此处用can’t表示否定推测，意为“不可能”。
举一反三
You know he is not going to let us leave early if we __________ get the work done.
A．can’tB．may not
C．shouldn’tD．mustn’t

题型：不详难度：| 查看答案
The weather turned out to be fine yesterday. I __________ the trouble to carry my umbrella with me.
A．should have takenB．could have taken
C．needn’t have takenD．mustn’t have taken

题型：不详难度：| 查看答案
The teacher __________ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose.
A．shouldB．can
C．wouldD．must

题型：不详难度：| 查看答案
In crowded places like airports and railway stations, you __________ take care of your luggage.
A．canB．may
C．mustD．will

题型：不详难度：| 查看答案
The biggest problem for most plants, which ___ just get up and run away when threatened, is that animals like to eat them.
A．shan’tB．can’t
C．needn’tD．mustn’t

题型：不详难度：| 查看答案
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