Is this the reason _______ he was late for the meeting?

A. why B. when C. where D. what

A

【解析】

試題分析：考查定語(yǔ)從句。先把原句改為陳述句：This is the reason________ he was late for the meeting.，可以看出，先行詞是the reason，定語(yǔ)從句“he was late for the meeting”是主系表結(jié)構(gòu)，不缺少成分，用關(guān)系副詞why引導(dǎo)，what不用于定語(yǔ)從句，故選A。

考點(diǎn)：考查定語(yǔ)從句

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