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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:1459

When I was at school, I _____ up very late, reading storybooks.

A.used to stay B.was used to stay
C.used to staying D.am used to staying
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WhenIwasatschool,Iupverylate,r