It is good manners in public.a.to not shout b.not to shout c.don't shout d.not shout说明为什么选这个答案

问题描述:

It is good manners in public.
a.to not shout b.not to shout c.don't shout d.not shout
说明为什么选这个答案

b.not to shout
it is+adj+(for sb)to do sth