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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 202

Jack wasn’t saying anything,but the teacher smiled at him________he had done something very clever.

A.as if B.in case C.while D.though
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Jackwasn’tsayinganything,butth