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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1231

Although ______ for many years, the two old sisters recognized each other at once.

A.having been separated B.being separated
C.having separated D.had been separated
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Althoughformanyyears,thetwoold