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题型:单选题 题类:常考题 难易度:普通

江苏省启东中学2019-2020学年高一上学期英语期初考试试卷

The factory _________ its waste into the river, but now it deals with the waste in a new way.
A、used to dump B、is used to dump C、used to dumping D、is used to dumping
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