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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1346

The question that puzzled them is ____ they can get rid of the air pollution in the area.

A.how is it that B.that how C.what is it D.how it is that
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Thequestionthatpuzzledthemisth