All the flights _______ because of the snowstorm, we had to take the train inste

游客2023-10-24 51

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

解析逗号前后句子无连词连接，因此前半句应用独立主格结构作状语，故排除A、B。由于动作发生在过去，且flights与cancel存在被动关系，因此用完成式被动语态，答案为D。

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