Having checked the doors were closed，and _________ all the lights were off，the boy opened the door to his bedroom．（　?。?/h1>

A．why

B．that

C．when

D．where

【答案】B

【解答】

【點評】

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發(fā)布：2024/4/20 14:35:0組卷：139引用：14難度：0.9

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Having checked the doors were closed，and _________ all the lights were off，the boy opened the door to his bedroom．（ ?。?/h1>