【題目】 He’s posted the letter, _________ he?

A. isn’t B. doesn’t

C. hasn’t D. wasn’t

【答案】C

【解析】試題分析：考察反義疑問句。反義疑問句尾部用什么詞取決于主句的助詞，本句中的助詞和主語在一起縮寫成了he’s，因而排除BD選項(xiàng)。該句意思為：他已經(jīng)投寄了那封信，不是么？has能表達(dá)已經(jīng)的意思，根據(jù)句意，故選C

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