IV. Rewrite the sentences to correct their mistakes. 1. If the Earth are warmer, the sea level will rise. 2. If we will plant more trees, there will be more fresh air. 3. Streets will be cleaner, if people put trash in the bins. 4. Other people will be angry if you don't make loud noise. 5. If we use recycled paper, we won't save a lot of trees. 6. What do you do if you see someone throwing rubbish on street? 7. If she uses plastic bag, she will help to reduce plastic watse. 8. People have breathing problems if they breathe dirty air.
