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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 646

____________better ways for digging tunnels__________, the first railway tunnel under the River Thames     was dug in 1884.

A.As , developing B.With, developed
C.As , were developed D.With, development
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betterwaysfordiggingtunnels,th