All flights ______ because of the snowstorm, they decided to take the train.

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问题 All flights ______ because of the snowstorm, they decided to take the train.

选项 A、were cancelled
B、have been cancelled
C、had been cancelled
D、having been cancelled

答案D

解析 由于暴风雪的原因,所有航班都被取消了,因此他们决定坐火车。本题考查分词的用法,分词结构可以表示时间、原因、条件、行为方式、伴随状况等意义。如果分词结构所表示的动作发生在谓语动词的动作之前,并已完成,用分词完成体。
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