题目

If you go by ______ train, you can have quite a comfortable journey, but make sure you get ______ fast one. A.the;the B./;a C.the;a D./;/ 答案：B 解析: by表方式时不用冠词,by train意思是“乘火车”,第二空表示泛指,指任何一个快车。They’re running.（改为一般疑问句）____________________________________