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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1982

    Jack wasn't saying anything, but the teacher smiled at him ________ he had done something very clever.(2011·湖南)

A.as if B.in case
C.while D.though
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Jackwasntsayinganything,butthe