1.The students______working to create a safer and more healfull invironment.
2.I_______trying to recycle all of my cans and bottles.
3. The world______ risking the danger of global warming.
4. Acid rain______ harming trees and wild animals .
5.Environmental organizations______ growing around the world.
6.The result_____showing up in improved living standards worldwide
7.Years ago,scientist_____becoming concerned about the effects of technology.
8.McDougald's class_______sending out a message about our responsibility to protect the wilderness.
9.I_______doing my part to protect the forest of America.
10.Once more,parks_______becoming beautiful places to picnic.​