1. Choose: We ____ waste water. It is important.

2. Choose: How ____ water do you drink?

3. Choose: There are ____ trees in the park.

4. Choose: We ____ cleaning the beach at ten.

5. Choose: Use cloth bags ____ of plastic bags.

6. Choose the best slogan.

7. Choose: The campaign starts ____ Sunday.

8. Choose: Have you made the poster? Yes, I ____.

9. Write 5 sentences about how to protect the environment. Use must, mustn't and a lot of.

10. Write a short invitation (3 sentences) to join a clean-up campaign. Include day, time and place.