All the lights ______ before we left the office.A、has been turned offB、have tur

游客2024-07-19 51

问题 All the lights ______ before we left the office.

选项 A、has been turned off
B、have turned off
C、had been turned off
D、had turned off

答案 C

解析我们离开办公室之前把所有的灯都关上了。

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