用所给词的适当形式填空。
1. There’s too _____________(many) rubbish on the ground.
2. There (be not) too (many)coal.
3. She has a lot of ____________(paper).
4.Trees help (keep)the air clean.
5. Look, he (cut)down the tree.
6. We use plastic _______________ (make) bags and bottles.
7. People can’t cut down too ________(many) trees.
8. There _________(be) not much water on Earth.