Question

【题目】Having checked the doors were closed, and all the lights were off, the boy opened the door to his bedroom.

A.why

B.that

C.when

D.where

Answer 1

【答案】B

【解析】考查宾语从句。句意：确保门关上了, 且所有的灯都关上了之后, 那个男孩打开门进了他的卧室。checked后跟了两个宾语从句, 第一个从句的引导词that省略了。