today people are encouraged to --- paper plastic and water for a better environment
问题描述：
today people are encouraged to --- paper plastic and water for a better environment
a\ use
b\ waste
c\ recycle
d\ make
说理由!
答
选择c.recycle "回收",其他都不符合句意：
a.use 使用
b.waste 浪费
d.make 制作