问题
选择题
In the last few years, great changes _____ in China.[ ]
A. were happened
B. have been happened
C. have happened
答案
答案：C
搜题请搜索小程序“爱下问搜题”
In the last few years, great changes _____ in China.[ ]
A. were happened
B. have been happened
C. have happened
答案：C