a. Correct order of imperatives about how to save the environment: 1. Don't use plastic bags when you go shopping. 2. Ride a bike to school to save the environment. 3. Plant more trees for fresh air. 4. Pick up your trash around the schoolyard. 5. Don't throw away cans and bottles, use and recycle them. b. Questions about the words written in capital letters: 6. What should I do when I'm not using water? 7. How does my family go to work and school every day? 8. What do students at my school have to put in the recycling bins? 9. When shouldn't we turn on the lights? 10. Who needs to learn how to save the environment?