on a shool trip呢

on a shool trip呢 I had a pleasant shool trip last weekend on a trip还是IN A TRIP go on a trip 造句 关于go on a trip be on a business trip the students had a great shool trip (改写同义句） the students _ _ 选择题:we need help____our shool trip. 答案A. with 答案B.for 是on a field trip,还是 in a field trip on a trip, in a trip之间有什么区别? go on a trip和go for a trip 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