Відповіді: Стр.173 (8)

Стор.173 Впр.8

Complete the sentences with the appropriate modal verbs.

1. We should recycle things to get rid of garbage. 2. One tone of recycled paper can save 17 trees. 3. People have to protect all the forests as they are keys to our survival. 4. We must be interested in saving more animals. 5. People shouldn’t kill the African elephant for its tusks. 6. Eco–friendly people could keep the environment clean. 7. You mustn’t turn up the heating all the time to reduce the use of energy.