Question

If you go by ________ train, you can have quite a comfortable journey, but make

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. /;/

Answer 1

答案B
表示交通方式时，一般用“by+单数名词”，不使用冠词，如by train(bus, air)；根据题意“如果你乘火车，旅行会很舒服，不过你一定要乘快车”，这里的one代指train，并没有特指，所以用不定冠词a。如果加上了时间等限制，则需要定冠词the。"