The mayor promised to take effective measures to (agree on?) the city.
问题描述：
The mayor promised to take effective measures to (agree on?) the city.
The mayor promised to take effective measures to () the city.
选项:
a、a.agree on
b、 b.come to
c、 c.clean up
d、 d.pull out
搞不清楚答案为什么是这个呀，能不能提醒一下？
答
C