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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1271

---Guys, I was really worn out!  I can’t walk any further!
--- We should have a rest. We ______ the cave a whole day.

A.exploring B.are exploring
C. have been exploring D.explore
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Guys,Iwasreallywornout!Ican’tw