问题
选择题
Great changes ________ in China since the People’s Republic of China _________ in 1949.
A． have taken place; was founded
B． has taken place; was founded
C． have been taken place; founded
D． took place; founded
答案
答案：A
“take place”无被动语态，由since引导的从句可知主句要用现在完成时，所以选A。
