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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 313

After his operation, the old man was back ______ and he began to take exercise as usual.

A.at his feet B.to his feet
C.in his feet D.on his feet
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Afterhisoperation,theoldmanwas