—Any information about your son?

—No. If only I ______ those tough words to him.

A．didn't say

B．hadn't said

C．shouldn't have said

D．couldn't have said

武汉市黄陂区自2009年元月起，由政府出资为外出务工的农民工购买一份工伤保险。政府这一做法是在履行 [ ]

A．保障人民民主的职能

B．组织社会主义经济建设职能

C．加强市场监管的职能

D．提供社会公共服务的职能