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  • 科目:英语
  • 题型:选择题
  • 难度:中等
  • 人气:50

The second C919 large passenger plane its first flight at Shanghai Pudong International Airport on December 17th, 2017.(  )

A.completesB.completed

C.has completedD.was completing

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ThesecondC919largepassengerpla