◎ 题干
The window is open. He _____ be out. He must be at home.
[     ]
A. can
B. can't
C. may
D. might
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“The window is open. He _____ be out. He must be at home. [ ]A. can B. can'tC. mayD. might …”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。