Having checked the doors were closed, and ________ all the lights were off, the boy opened the door

题目简介

Having checked the doors were closed, and ________ all the lights were off, the boy opened the door

题目详情

Having checked the doors were closed, and ________ all the lights were off, the
boy opened the door to his bedroom.
A.whyB.thatC.whenD.where
题型:单选题难度:中档来源:不详

答案

B
B [连接词that引导第二个宾语从句,不具有任何意义,但一般不能省略。]

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