CROSSWORD PUZZLE

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Across
  1. 1. Speaking tool for loud voice
  2. 5. A vehicle used to carry things
  3. 6. People who help without being paid
  4. 11. Giving help or support
  5. 12. Action for a cause
  6. 13. To make something clean
  7. 15. Happening every year
Down
  1. 2. The place where we live
  2. 3. People aged around 13–19
  3. 4. To keep something safe
  4. 7. Knowing something is important
  5. 8. Feeling something must be done quickly
  6. 9. Becoming bigger or more
  7. 10. A big problem in the world
  8. 14. Dirty things thrown away