on a vacation造句

on a vacation造句 以be on(a)vacation造句 on vacation 造句 on a vacation是什么意思 go for one's vacation /on vacation/ take a vacation 用go to hongkong on vacation造句 用 go on vacation 造句 5个 for vacation on vacation take a vacation on holiday for vacation 的区别 go on vacation 和go on a vacation 的区别? go on vacation还是go on a vacation? go on a vacation与go on vacation的区别go on a vacation与go on vacation一样吗? take a vacation = go on vacation = have a vacation = go for a vacation=on sp take a vacation 和 go on vacation 有什么区别? 是go on vacation 还是go on a vacation?是go for vacation还是go for a vacation? take a vacation = go on vacation = have a vacation? a vacation 前用on还是for Go on a vacation = holiday plase write a r___ on students'vacation