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
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
B