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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1590

--- Is there any possible way to help them get rid of such a bad habit?
--- To tell the truth, it’s very hard. But we   on this problem trying to improve the situation.

A.worked B.had worked C.are working D.had been working
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Isthereanypossiblewaytohelpthe