Manypeopleliketotravel 国语站 题库 1.83W 大中小设置文字大小 问题详情:Many people like to travel ________ air, but I think that travelling ______ the train is more enjoyable. A. by; by B. by; on C. on; on D. on; by 【回答】B知识点:介词和介词短语题型:选择题 TAG标签:#