Complete the given sentences.

1. If people thought about the Earth before they throw something away, the world would be a cleaner place. 2. If people took as much rubbish as they could to local recycling centres, less waste would go to landfills. 3. If people avoided buying packaged goods, there would be less plastic pollution. 4. If people didn’t waste paper, we could save more trees. 5. If people didn’t drop litter, public places would look more beautiful. 6. If people cleared up litter outside their home, offices and schools, the environment would be more pleasant.