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Mr. Smith, I should tell you this is the fifth time you ______ me for my twin sister.

A．have mistaken B．a(chǎn)re mistaking
C．mistook D．a(chǎn)re mistaken

A

解析試題分析：句意：史密斯先生，我應(yīng)該告訴你這是你第五次把我誤認(rèn)為是我的孿生妹妹。根據(jù)前面的this is the fifth time可知，后面用現(xiàn)在完成時(shí)。故選A。
考點(diǎn)：考查動(dòng)詞時(shí)態(tài)。

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