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外语
All flights ______ because of the snowstorm, we decided to take the train.
All flights ______ because of the snowstorm, we decided to take the train.
admin
2014-07-20
61
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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专业英语四级
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