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题目
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—Tom must be at home because the light in his house is on.
—He       be at home, because I saw him playing basketball on the playground.
A. must B. can’t   C. mustn’t
答案
B
解析

试题分析:句意:-Tom一定在家里因为他家里的灯亮着。-他不可能在家,意为我看见他在操场打篮球了。根据这个情景可知,这里两个人是在进行推测,根据第二个人的话可知,他很确定Tom不在家里,表示否定的推测应该用can’t,意思是不可能。must 表示推测时只能放在肯定句中。故选B。
核心考点
试题【—Tom must be at home because the light in his house is on. —He       be at home,】;主要考察你对词法等知识点的理解。[详细]
举一反三
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题型:不详难度:| 查看答案
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A.wouldB.needC.mustD.should

题型:不详难度:| 查看答案
-Must I take part in the activity?
-No, you _________.
A. mustn’t             B. don’t                   C. don’t have to
题型:不详难度:| 查看答案
---Listen! Is Tom singing in the room? 
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---Must I water the flowers right now?
---No, you ________ . You may do it after supper.
A. mustn"t             B. needn"t           C. can"t
题型:不详难度:| 查看答案
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