2. 外语
  3. All flights ______ because of the terribly bad weather, the passengers had to wait at the airport.

All flights ______ because of the terribly bad weather, the passengers had to wait at the airport.

admin2014-07-20  53
问题 All flights ______ because of the terribly bad weather, the passengers had to wait at the airport.
选项 A、had been cancelled
B、having cancelled
C、having been cancelled
D、were cancelled
答案C
解析 本题的前、后两部分没有连词，由此可以推断出前半部分应该用独立结构来表示。这样一来，A和D就首先被排除掉了。又因为航班的取消需要用被动态来表示，故B也是不对的，应被排除掉。因此，只有C是唯一正确的选项。
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