Question

When you go by train, please see to it_______ you take an express, _______ that stops only at big stations.

1. A.
   that, one
2. B.
   /, the one
3. C.
   that, it
4. D.
   /, it

Answer 1

A
解析：
试题
分析：句意：当你去乘火车时，请留心你搭乘的快车，因为快车只在大的车站才会停下来。it作形式宾语，that从句为真实宾语；
me指代an express，that指导定语从句。考点：it用法及one用法。
点评：本题有一定难度。首先需要对句子成分进行划分，理解it作用，而后一空中one = a/an