◎ 题干
一I heard that you got an A in the chemistry exam.Well done!
一Thanks,I know that you     a good job as well.
A.shouId have doneB.need have done
C.must have doneD.could have done
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“一I heard that you got an A in the chemistry exam.Well done!一Thanks,I know that youa good job as well.A.shouId have doneB.need have doneC.must have doneD.could…”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。