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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1930

—Miss Smith once _____ music in Africa for eight years and now is an actress.
—No wonder I often hear her sing in the garden.

A.has taught B.was teaching
C. taught D.had been teaching
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—MissSmithoncemusicinAfricafor