Chỉ em với ạ. Em xin cảm ơn các ac nhiều ạ

13. She came to the stadium (in, on,(by) bus. 14.They go to work (in, on, by) train. 15 .I usually read books while I am (in, on, by) a train. 16. We went to Gothenburg last summer and it was our first time (in, on, by) a tram. 17. He often travels (in, on, by) his car. 18.They prefer ...