◎ 题干
— Look, it _____ be Jack who is at the gate of the library.
It _____ be him. He has gone abroad.
may; must   B. must; mayn’t C. must; can’t    D. can; mayn’t
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Look, it _____ be Jack who is at the gate of the library.It _____ be him. He has gone abroad.may; must B. must; mayn’t C. must; can’t D. can; mayn’…”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。