◎ 题干

You _____ be tired; you have been working for so long a time,
but he _____ be tired; he has just begun to work.
A.may not; must B.must; may notC.can’t; mustD.must; can’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“You _____ be tired; you have been working for so long a time,but he _____ be tired; he has just begun to work.A.may not; must B.must; may notC.can’t; must…”主要考查了你对  【虚拟语气】【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。