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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1189

  The chemistry teacher asked the students ________ more attention _________the lab clean.

A.to pay ,to keep B.to paying ,to keeping
C.to pay , to keeping D.paying ,keeping
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Thechemistryteacheraskedthestu