All flightsbecause of the snowstorm, many passengers could do nothing but take the train .A.had been

题目简介

All flightsbecause of the snowstorm, many passengers could do nothing but take the train .A.had been

题目详情

All flights    because of the snowstorm, many passengers could do nothing but take the train .
A.had been canceled B.have been canceled
C.having been canceled D.being canceled
题型:单选题难度:偏易来源:不详

答案

C

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