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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 517

There was a _____ look on his face. He found what the expert said too difficult to understand.

A.puzzle B.puzzling C.puzzled D.to puzzle
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Therewasalookonhisface.Hefound