what is it 和 what it is 有何区别

what is it 和 what it is 有何区别 what is it?和what it is?有什么区别 what it is?和 what is it?有什么区别? what it is 和how it is有什么区别 what is it和 what it is的区别 what is it…和what it is…区别 what time is it 和what time is it有什么区别 What day is it?和What day is it today 有什么区别 what is it 和what is this的区别是什么? how is it与 what is it有什么区别? this is 与 it is有什么区别 还有 what is it 与 what is this what is her/his job和what is it job 有什么区别