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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1654

I’m sorry I delayed_________ your letter because I have been quite busy these days.

A.to answer B.to have answered
C.answering D.answered
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I’msorryIdelayedyourletterbeca