---I’m sorry, I ______ at you the other day.

----Forget it. I was out of control at that time, too.

A．shouldn’t shout

B．mustn’t have shouted

C．shouldn’t have shouted

D．mustn’t shout

常见的社会工作伦理难题有以下几个方面（）

A.情理法问题

B.价值中立还是价值介入

C.保密问题

D.个人利益和社会责任

E.自觉原则和知情同意