—Who’s that boy reading in the study ? Is it David?—It __________ be David. I s

—Who’s that boy reading in the study ? Is it David?—It __________ be David. I s

题型:不详难度:来源:
—Who’s that boy reading in the study ? Is it David?
—It __________ be David. I saw him go home just now.
A.mustB.can’tC.mayD.shouldn’t

答案
B
解析

试题分析:句意: -在书房里读书的那个男孩是谁?是David吗?-不可能是David,我刚才看见他回家了。本题考查的是情态动词表示推测的用法。must 一定,肯定,只能用在肯定句中,表示一个很有把握的推测;can’t 不可能,语气较强,用在否定句中;may 可能,可以用在肯定或否定句中,语气较弱;shouldn’t 不应该。根据题意,说话人觉得那个人不可能是David,故选B。
举一反三
Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.
A.mustn’t B.ought not toC.needn’t D.don’t have to

题型:不详难度:| 查看答案
— Dad, must we wait until the light becomes green?
— Yes, I’m afraid we ______. That’s the traffic rule.
A.canB.mayC.have toD.need

题型:不详难度:| 查看答案
—Tom can’t find his gloves. Are these blue gloves his?
      —No, they ______ be his. His gloves are black.
A.mustB.mayC.can’t D.mustn"t

题型:不详难度:| 查看答案
— Must we send our plan this week?
— No, you ______.
A.mustn’tB.can’tC.shouldn’tD.needn’t

题型:不详难度:| 查看答案
— ______ you sing the English song?
— Yes, I can. But only a little.
A.CanB.MayC.MustD.Need

题型:不详难度:| 查看答案
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