2. 外语
  3. All flights ______because of the snowstorm, we decided to take the train instead.

All flights ______because of the snowstorm, we decided to take the train instead.

admin2009-01-05  45
问题 All flights ______because of the snowstorm, we decided to take the train instead.
选项 A、were canceled
B、had been canceled
C、having canceled
D、having been canceled
答案D
解析 英语中两个或两个以上句子间一般都有连词来连接，以构成并列关系或从属关系，据此我们可以将A和 B排除。C和D都是现在分词短语，和all flights构成独立主格结构，作原因状语，又因为cancel 和all flights 具有逻辑上的动宾关系，所以应用被动式，因此C错误，而D正确。
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