In the last few years, great changes to her, she is not the one that used to be.
A. happened
B. have been happened
C. have happened
D. were happened
网友回答
A. happened
B. have been happened
(答案→)C. have happened
D. were happened
解析：句意：在过去几年中，她发生了巨大的变化，她不再是过去的那个人了。结合语境可知本句描述的是现在已经完成的动作，故用现在完成时态。Happen做为行为动词讲时，主语为物，联系本句主语great changes，故用主动语态。选C。