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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1846

Mr. Black, as far as I know, is said _______ a book on the history of the Ming Dynasty, which turns out to be a bestseller.

A.to write B.to have written
C.to be writing D.having written
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Mr.Black,asfarasIknow,issaidab