【題目】Look, the ground is wet. It must have rained last night, _________?

A. wasn’t it B. hasn’t it

C. didn’t it D. mustn’t it

【答案】C

【解析】

試題分析：考查反義疑問(wèn)句。句意為：看！地面濕了，昨天晚上肯定下雨了，不是嗎？由last night及must have rained可知此處是對(duì)過(guò)去情況的猜測(cè)，下雨是過(guò)去的事實(shí)，所以反意疑問(wèn)句的助動(dòng)詞用did，并且根據(jù)前肯后否的原則，反意疑問(wèn)句應(yīng)該用否定形式，C項(xiàng)正確，故選C。

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