◎ 题干
Mr. Smith, I should tell you this is the fifth time you ______ me for my twin sister.
A.have mistakenB.are mistaking
C.mistookD.are mistaken
◎ 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“Mr. Smith, I should tell you this is the fifth time you ______ me for my twin sister.A.have mistakenB.are mistakingC.mistookD.are mistaken…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  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。