问一下may,can,must,could提问时该怎么回答?
问题描述：
问一下may,can,must,could提问时该怎么回答?
答
may：肯定may 否定mustn't can:can can't must:have to do don't have to do could:肯定sure certainly of course 否定 certaintly not,of course not 记得给分哦