giúp mình bài này:
điền các từ thích hợp vào chỗ chấm:  waste      surprised        labor         ton            resources                  requires           recycling      thrown       discussion          preserved
My class has a  .............. on waste paper. My friends are so  ............. to learn that every day throughout the world, millions of newspapers and paper bags are ........ away. People are collecting waste paper and .......... it. Making paper ........ a lot of trees and labour. Now if people don't .......  paper, they can save ........ and money. Especially, people can save the natural ............ . For every ............. of recycled new sprint,ten trees can be saved. The people save, the more natural resources are .......... .