Great changes in China in the past 30 years and many Chinese are living a happy life today.
A. took place
B. were taken place
C. have taken place
D. have been taken place
网友回答
A. took place
B. were taken place
(答案→)C. have taken place
D. have been taken place
解析：句意：在中国过去的30年中发生了巨大的变化,很多中国人今天过着幸福的生活。take place “发生”，不及物动词短语，没有被动形式。故排除BD。和in the past 30 years连用用现在完成时，故选C。