All flights （）because of the storm; they decided to take the train.
A、
having canceled
B、
have been canceled
C、
were canceled
D、
having been canceled
【正确答案】：C
【题目解析】：
考查一般过去时。由于暴风雨，所有的航班都取消了，他们决定乘火车。两个句子用分号连接为并列关系，decided为过去式， cancel应为过去时态，故选C。
All flights （）because of the storm; they decided to take the tra
A、
B、
C、
D、
【正确答案】：C
【题目解析】：
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