1 The air and water quality (get) worse and worse. 2 We can even (reduce) our carbon footprint in our homes. 3 Try to avoid (use) single-use products. 4 People can volunteer at some local environment...

1. The air and water quality is getting worse and worse. 2. We can even reduce our carbon footprint in our homes. 3. Try to avoid using single-use products. 4. People can volunteer at some local environment programs to save endangered species. 5. Should we recycle unused products? 6. Forests help release oxygen. 7. I was not at school yesterday because I had the flu. 8. As soon as my parents arrive home, we will have dinner. 9. Don't forget to turn off the light before you go out. 10. More than 1 billion people participate in Earth Day activities every year.