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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1689

Since the general retired from the army, he __________ himself in writing his memories.

A.is devoting B.has been devoted
C.had occupied D.has been occupying
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Sincethegeneralretiredfromthea