网友回答：
so，we can practice conservation.we can reduce waste and reuse things.we can recycle paper，people have to stop littering.we have to respect our surroundings.we must become friends of the earth.too.we can put up more dont litter signs.we can trashcans on ev
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
