◎ 题干
——Catherine, I have cleaned the room for you.
——Thanks, You       it. I could manage it myself.
A.needn’t doB.needn’t have done
C.mustn’t doD.shouldn’t have done.
◎ 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“——Catherine, I have cleaned the room for you.——Thanks, You it. I could manage it myself.A.needn’t doB.needn’t have doneC.mustn’t doD.shouldn’t have done.…”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。