◎ 题干
— Is Mr. Smith in his office now?
— No, he _____ there. I _____ him in the library a minute ago.

[     ]

A. may be, saw
B. can't be, see
C. mustn't be, see
D. can't be, saw
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Is Mr. Smith in his office now? — No, he _____ there. I _____ him in the library a minute ago. [ ]A. may be, saw B. can't be, see C. mustn't be, see D…”主要考查了你对  【情态动词】【一般过去时】  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。