◎ 题干
— We did not see him at the lecture yesterday.
— You _______ him, since I went to an international conference with him.
A.mustn’t have seenB.can’t have seen
C.couldn’t seeD.needn’t have seen
◎ 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“— We did not see him at the lecture yesterday. — You _______ him, since I went to an international conference with him.A.mustn’t have seenB.can’t have seen C.c…”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。