If you go by train you can have quite a comfortable journey but make sure that you get＿f

问题补充：

If you go by train, you can have quite a comfortable journey, but make sure that you get＿fast one.

A. the; the

B. /; a

C. the; a

D. /; /

答案：

A. the; the

(答案→)B. /; a

C. the; a

D. /; /

解析：考查冠词的用法。第一空：用介词by后用交通工具，不需要加冠词，如by train，第二空：后面出现one,需要加不定冠词a,所以选B。