问题
选择题
There______ great changes in our country since 1979. [ ]
A. have been
B. were
C. has been
D. are
答案
答案：A
搜题请搜索小程序“爱下问搜题”
There______ great changes in our country since 1979. [ ]
A. have been
B. were
C. has been
D. are
答案：A