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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1543

Has ____ how many spies we caught during the war ____ up to now?

A.it been declared; have been set free
B.it declared; have been set free
C.they declared; has been set free
D.they declared; have set free
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Hashowmanyspieswecaughtduringt