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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 490

There are lots of problems in your hometown, but we're happy to see many of them________.                                   

A.are solving B.are solved C.have solved D.are being solved
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相关知识点

Therearelotsofproblemsinyourho