问题
选择题
When you go by train, please see to it_______ you take an express, _______ that stops only at big stations.
A．that, one
B．/, the one
C．that, it
D．/, it
答案
答案：A
see to注意，负责。see to后接宾语从句加it再加that引导的宾语从句，构成see to it that; one做同位语代替an express，后接定语从句。