◎ 题干
—What did you say to your sister? I saw her crying in the room.
— It _________ my fault. I just said hello to her when I met her, nothing else.
A.must have beenB.can’t have been
C.oughtn’t to beD.should have been
◎ 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“ —What did you say to your sister? I saw her crying in the room.— It _________ my fault. I just said hello to her when I met her, nothing else.A.must have be…”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。