Complete the passage with words given in the box.

The box: waste, surprised, resources, recycling, ton, labor, throw, discussion, requires, preserved.

        Ba's class has a _______ on waste paper. His 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 labor. Now if people don't _______ paper, they can save ______ and money. Especially, people can save the natural ________. For every_______ of recycled newsprint, ten trees can be saved. The more paper people save, the more natural resources are ________.