◎ 题干
(2013·四川,5)—Why are your eyes so red?You________have slept well last night.
—Yeah,I stayed up late writing a report.
A.can'tB.mustn'tC.needn'tD.won'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“(2013·四川,5)—Why are your eyes so red?You________have slept well last night.—Yeah,I stayed up late writing a report.A.can'tB.mustn'tC.needn'tD.won't…”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。