--we are going there by sea.---Don’t you think it too slow? Why not take train

------- we are going there by sea.
------ Don’t you think it too slow? Why not take train?
A. the; /
B. the; the
C. /; /
D. /; the

A. the; /B. the; theC. /; /(答案→)D. /; the解析：考查冠词的用法。乘交通工具，用by时不加冠词，用take,需加冠词，by sea 乘船，take the train乘火车，故选D。

我也是这个答案