All the flights_____because of the snowstorm, we had to take the train instead.A

游客2024-10-17 6

问题 All the flights_____because of the snowstorm, we had to take the train instead.

选项 A、were canceled
B、had been canceled
C、having canceled
D、having been canceled

答案 D

解析该句的前半句使用的是独立结构，由于动作发生在过去，所以根据题意要求，使用了完成式被动语态。

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