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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1167

The air quality in the city,________ is shown in the report,has improved over the past two months.                                                        (2012·福建,23)

A.that B.it
C.as D.what
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Theairqualityinthecity,isshown