—The light in his office is still on. Do you know ?

—In order to prepare for tomorrow’s meeting.

A. if he works hardB. why he stays up so late

C. that he is so busyD. when he will stop working

 

B

【解析】

試題分析：句意：他的辦公室的燈還亮著，你知道為什么他熬夜那么晚嗎？為準備明天的會議。根據(jù)回答可知上句在問原因，故選B。

考點：考查賓語從句的用法。

 

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