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  • 科目:英语
  • 题型:单选题
  • 难度:容易
  • 人气:509

—These days,he has stayed up late into night in order to get good marks in the following monthly test.
—It's no ________ that he seems tired and asleep in class every day.

A.wonder B.problem
C.doubt D.question
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—Thesedays,hehasstayeduplatein