成人英语三级

单选题The reason __________ he failed the exam was he had not worked hard.

A.why.., if
B.why.., that
C.that.., why
D.why.., what

参考答案:B进入在线模考
【参考译文】他考试失败的原因是不够努力。
【答案解析】本题考查定语从句和表语从句。名词reason后的定语从句由why引导,表语从句由that引导,故本题选B。

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