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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1459

Only after the teacher explained it to me a second time _____ the question.

A.did I understand B.I had understood
C.had I understood D.I did understand
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Onlyaftertheteacherexplainedit