填空题

A．usual
B．useful
C．just
D．mistake

【参考答案】

A
<上一题 目录 下一题>
热门 试题

填空题
A．until B．southern C．without D．puzzle
单项选择题
We are using up our natural resources too quickly and at the same time we are ______ our environment with dangerous chemicals.
A．protecting
B．saving
C．polluting
D．fighting
相关试题