◎ 题干
He has no idea what the book is about. He _____ have read it very carefully.

[     ]

A. needn't
B. shouldn't
C. can't
D. mustn't
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“He has no idea what the book is about. He _____have read it very carefully. [ ]A. needn't B. shouldn't C. can't D. mustn't …”主要考查了你对  【情态动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。