on a trip, in a trip之间有什么区别?
on a trip, in a trip之间有什么区别?
on a trip还是IN A TRIP
on a school trip与on the school trip有什么区别?
go for a trip和go on a trip 有什么区别?
是on a field trip,还是 in a field trip
be away on official business和be on a business trip有什么区别
in a trip还是in a trip
请问travel和go on a trip 有什么不同?
a trip in a plane等于什么?
go for a trip and go on a trip 哪个是正确的.如果都对二者有什么区别呢
i love to go on a trip in summer中对go on a trip提问
on a school trip与on the school trip的区别?