[10] All flights _____ because of the snowstorm,we decided to take the train

[10] All flights _____ because of the snowstorm,we decided to take the train
.
A.were canceled
B.had been canceled
C.have canceled
D.having been canceled
翻译包括选项,详细分析句子.
英语人气:583 ℃时间:2019-08-19 17:10:54
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答案D你的句子是独立主格结构句子.如果变成非独立主格结构句子就成了:As / Since all flights had been cancelledbecause of the snowstorm,we decided to take the train.这样的从句必须有连接词as / since.如果没...
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