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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1971

– How long have you been collecting stamps?
– Ever ______ I was twelve. I have been collecting stamps for about eight years.
A. since                        B. before                     C. by

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–Howlonghaveyoubeencollectings