单项选择题

Everyone here will thank the fire-workers for the things they have done to prevent fires______ the environment safer.

A．making
B．from making
C．to make
D．made
<上一题 目录 下一题>
热门 试题

单项选择题
—Would you like to come to dinner tonight —I'd like to, ______I'm too busy.
A．and
B．so
C．as
D．but
单项选择题
This method, ______in the area near Shanghai, resulted in a market rise in total production.
A．trying
B．tried
C．was tried
D．has been tried
相关试题