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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 487

Li Ning was able to set up a school for gymnasts in 1991, ______ he has continued to help young people to achieve their sporting ambitions.

A.when B.dring which C.since then D.since when
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LiNingwasabletosetupaschoolfor