问题 选择题

Is this the reason _______ at the meeting for his carelessness in his work?

A.he explained

B.what he explained

C.how he explained

D.why he explained

答案

A

空白处引导定语从句,先行词是reason,因B、C两项不能引导定语从句,应排除。D项有一定干扰性,因先行词为the reason,但是,从句中缺少的是explained的宾语,不用why引导,应用which或that或省略。

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