Once environment damage ________, it takes many years for the government to recover. A.has done B.is...
2022-06-01 00:04:33 96次 上海市2017-2018学年高二上学期期中英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Once environment damage ________, it takes many years for the government to recover.
A.has done B.is to do C.does D.is done
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