All flights______because of the snowstorm, we decided to take the train.A、were c

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问题 All flights______because of the snowstorm, we decided to take the train.

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

答案 D

解析本题考查非谓语动词。具体说来，该题考查分词独立主格，同时由于该独立主格表示的动作发生在主句谓语前，而且动宾之间是被动关系，所以使用分词独立主格的完成被动式。故选D。

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