my school trip.过去式 30-50字

Last Sunday,we had a school trip.We went to the XXXX.We went there by bus.On the way there,we sang many songs on the bus,and when we got the XXXXX,we had a big picnic together.We did many games there,and we saw some beautiful birds.And our teacher told us we should take the litter away,which made by us.In a word,we enjoyed a meaningful trip.