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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 1939

The river _____ banks used to be covered with fruit trees and flowers is now seriously polluted. 

A.of which B.along which C.where D.whose
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Theriverbanksusedtobecoveredwi