what it is & what is it?的区别?

what is it和 what it is的区别 what it is & what is it?的区别? what is it 和what is this的区别是什么? what time is it 与when is it 的区别 what is it?和what it is?有什么区别 what is it…和what it is…区别 what colour it is与 what colour is it 区别 what is it 和 what it is 有何区别 what it is?和 what is it?有什么区别? What kind of job is it?和What kind of job it is?的区别 what is the color与what color is it 区别 关于what it is和what is it的用法