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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1011

On account of fuel supplies being finite and many people being wasteful, we will have to install ________ solar heating device in our home.

A.some type of a B.some types of a C.some type of D.some types of
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Onaccountoffuelsuppliesbeingfi