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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1425

As the saying goes, one is never too old to learn.After he _____, he will devote himself to gardening.

A.retired B.has retired C.will retire D.had retired
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Asthesayinggoes,oneisnevertooo