作业帮All flights__because of the snowstorm,we decided to take the train instead.A.had been canceledB.having been canceled
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All flights__because of the snowstorm,we decided to take the train instead.A.had been canceledB.having been canceled
All flights__because of the snowstorm,we decided to take the train instead.
A.had been canceled
B.having been canceled
All flights__because of the snowstorm,we decided to take the train instead.A.had been canceledB.having been canceled
All flights__because of the snowstorm,we decided to take the train instead.
A. had been canceled
B. having been canceled
这个考察的是独立主格结构.句子的主语we和从句的主语all flights不一致,因此采用独立主格结构,根据主句时态是过去,从句的动作发生在主句之前,因此用完成时,又根据cancel和flights时被动态.得出答案是B