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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 251

Lots of rescue workers were working around the clock,              supplies to Yushu, Qinghai province after the earthquake....

A.sending B.to send
C.having sent D.to have sent
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Lotsofrescueworkerswereworking