Fill in the words from Ex. 1, p.76.
1. ……………. is very harmful to the environment.
2. A lot of ………………is dumped into this river.
3. Chemicals cause ………………..
4. …………………..is environmentally friendly.
5. Many ……………………are in danger of dying out.
6. Forests fires cause many animals to lose their …………………
7. How can I avoid breathing ……………….from cars while cycling in the city?