1. If we plant more trees, the neighborhood will be greener.
2. If we cycle to school every day, we will keep the air clean and fresh.
3. If we keep hunt animals, they will disappear soon.
4. If we cut down all trees, there will be floods.
5. If we use buses, we will reduce pollution.
6. If he studies harder, he will get good marks.
7. If people burn rubbish, they will produce harmful smoke.
8. She will go to the party if you invite her.
9. If the river polluted, the fish will die.
10. If people cycle more, there will be less pollution.
