on vacation=( ) ( )
on vacation
take a vacation = go on vacation = have a vacation = go for
take a vacation = go on vacation = have a vacation?
for vacation和on vacation
Go on a vacation = holiday
是on vacation还是on a vacation
in the vacation ;go on vacation ;on vacation 区别?
度假 英语 on vacation
go on vacation ,
be on vacation[翻译】
on vacation 造句
on a vacation是什么意思