did you 和were you的区别
did you 和were you的区别
were you 和did you 的用法
how were you 与how did you 的区别
what were you doing there?和what did you do there?的区别
what did you do 和 what you did 的区别
when were you stading和when did you start有什么区别吗?
if i were you 跟if i did you的区别
did you和 have you的区别是什么?
did you understand 和 do you understand 的用法区别
where were you going和where did u go有什么区别
when did you born 和 when were you born 哪个用法是正确的
when did you do和what did you do 区别