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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 138

____ his telephone number, she had some difficulty getting in touch with Bill.

A.Not knowing B.Knowing not
C.Not having known D.Having not known
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histelephonenumber,shehadsomed