All flights __________(由于暴雪而被取消), many passengers could do nothing but take the train.

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问题 All flights __________(由于暴雪而被取消), many passengers could do nothing but take the train.

选项

答案having been canceled because of the snowstorm

解析 考查独立主格结构作原因状语以及语态。由于逗号之后是个完整的主谓句,之前如果没有关联词的话就需要用“逻辑主语+分词”形式,构成独立主格;frights和“取消”是动宾关系,所以用分词的被动态,并且“取消”发生在主句谓语动作之前,要用完成时,故答案为having been canceled because of the snowstorm。
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