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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:1350

For some time now, Chinese people, under the leadership of CPC, ______ the contents of the Scientific Development Theory in the course of practicing socialism in China.

A.had been improving B.have been improving
C.were improving D.improved
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For some time now, Chinese peo