2. 外语
  3. All flights ______ because of the snowstorm, we decided to take the train.

All flights ______ because of the snowstorm, we decided to take the train.

admin2014-07-20  36
问题 All flights ______ because of the snowstorm, we decided to take the train.
选项 A、were canceled
B、had been canceled
C、having canceled
D、having been canceled
答案D
解析 非谓语动词。具体说来，该题考查分词独立主格，同时由于该独立主格表示的动作发生在主句谓语前，所以使用分词独立主格的完成时形式。
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