Have you______traveled on the train

Have you______traveled on the train -Have you_____ travelled on the train. in the train和on the train Jenny is on the train.对on the train提问 Have you ever gone travelling on the train that was named af Li Ming is on the train还是 in the train 乘火车：on the train还是in the train? 是on the train还是in the train? on the train还是in the train正确?为什么? in a train 与on the train的区别 The train may arrive in on time let us get on ( ) the train