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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 895

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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Jackwasntsayinganythingbutthet