◎ 题干
— She looks rather upset. She        the exam.
— I guess so. It’s very difficult after all.
A.must have failedB.can fail
C.would have failedD.should fail
◎ 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“ — She looks rather upset. She the exam.— I guess so. It’s very difficult after all.A.must have failedB.can failC.would have failedD.should fail…”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。