单项填空Humansareslowlypollutingthewholeworldandthereisnote...
来源：国语帮 1.67W
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
