All the lights ______ before we left the office. [originaltext]时态和语态[/originalte

游客2024-07-27 19

问题 All the lights ______ before we left the office.

时态和语态

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

答案 C

解析此句中主句的动作在从句的动作之前，而从句的动作发生在过去，所以主句应该用过去完成时，因为all the lights和turn off之间是被动关系，所以应该用被动形式，故选C。

转载请注明原文地址:https://tihaiku.com/zcyy/3694727.html

相关试题推荐

随机试题

最新回复(0)

Theproduction______ofthefactoryisnow800,000units.[originaltext]近义词辨析[/o