in the school trip还是at the school trip还是on,

in the school trip还是at the school trip还是on, 是on this trip 还是in this trip.还是with the trip,求解答 是go to the school trip 还是go to school trip when is the school trip?------ May 1st A in B At C On D From I think the school trip( ) great填was还是is on a school trip与on the school trip的区别? on a school trip与on the school trip有什么区别? 是 on the trip 还是 in the trip 若两者都行,请说出区别.. join the trip还是join in the trip on a trip还是IN A TRIP （）is the school trip 初二选词填空have driving lessons,at the end of,go on a school trip