what to do和how to do it有什么区别?

what to do和how to do it有什么区别? How to do 和 What to do 有什么具体的用法及区别 how to do it what to do的区别 how to do it和how to do区别 how to do it和what to do it的区别 what to do和how to do it what to do和how to do it和when to do it中何时有 it? how to do和what to do的区别 should she do和what to do,有什么区别? how does it feel to 和 how do you feel 有什么区别? 1.How to do 和what to do 有什么区别呢.如果要跟next的话怎么加啊. what to do 与 how to do 有什么区别吗?