单项填空Humansareslowlypollutingthewholeworldandthereisnote...

问题详情：

单项填空

Humans are slowly polluting the whole world and there is not enough clean air _______ water. We must take action, _______ things will be worse.

A. and; and       B. or; and        C. and; or      D. or; or

【回答】

D

知识点：连词

题型：选择题