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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 2024

Although he has failed many times, he keeps _____ hard to make his dream come true.
A. working             
B. to work               
C. worked

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Althoughhehasfailedmanytimes,h