题目内容

【题目】一I don't know _________ she can't go hiking with us．

一She has to do her homework．

A．when B．if C．why D．How

【答案】C

【解析】

试题分析：句意：—我不知道她为什么不能和我们去远足。—她不得不做作业。A．when 当……时候；B．If如果；C．Why为什么；D．How怎样。根据句意及语境此题是问为什么，故选C。

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