1. We mustn’t make fires in the forest. 2. We should plant trees. 3. We should put out a fire. 4. We mustn't throw rubbish away. 5. We should clean parks and forests. 6. We mustn't break or cut trees. 7. We should save energy. 8. We mustn't switch on the lights in all the rooms. 9. We mustn't catch birds. 10. We should give food to wild animals and birds. 11. We should clean rivers and lakes. 12. We should take care of animals and birds in the forest. 13. We musn't pollute air/water. 14. We should protect nature.
2. We should plant trees.
3. We should put out a fire.
4. We mustn't throw rubbish away.
5. We should clean parks and forests.
6. We mustn't break or cut trees.
7. We should save energy.
8. We mustn't switch on the lights in all the rooms.
9. We mustn't catch birds.
10. We should give food to wild animals and birds.
11. We should clean rivers and lakes.
12. We should take care of animals and birds in the forest.
13. We musn't pollute air/water.
14. We should protect nature.