let's stop__ to keep the earth beautiful and clean.pollute)
问题描述：
let's stop__ to keep the earth beautiful and clean.pollute)
polluting还是pollution?
答
stop doing sth 停止正在做某事
stop polluting 停止污染呵呵，我也是这么想的。可是答案是pollution大家看看可以是pollution吗？要硬要pollution，也可以，就是stop sth的用法。