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1 . 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 |
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2022-03-28更新
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2卷引用：安徽省庐江二中2014/2015学年第二学期髙一年级第一次月考英语试卷
