◎ 题干
All flights       because of the snowstorm,we decided to take the train.
[     ]
A.were canceled
B.had been canceled
C.having canceled
D.having been canceled
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“All flights because of the snowstorm,we decided to take the train. [ ]A.were canceled B.had been canceled C.having canceled D.having been canceled …”主要考查了你对  【独立主格结构】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。