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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:2063

It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.

A.had wiped out B.have wiped out 
C.have been wiped out  D.had been wiped out
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It’sreportedthatinthepast50yea