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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 558

Books are made __________ paper while paper is mainly made __________ wood.

A.of; of B.from; from C.of; from D.from; of
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Booksaremadepaperwhilepaperism