English class

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Across
  1. 3. antonym immature
  2. 7. e.g. 1;2;3;4
  3. 9. to not make sth.
  4. 10. affects whole world
  5. 12. place to learn
  6. 14. e.g.biology
  7. 16. period of 12 months
  8. 17. past of steal
  9. 18. to not do it
  10. 20. no money
Down
  1. 1. synonym forever
  2. 2. In sleep
  3. 4. needed quickly
  4. 5. 1 billion tons
  5. 6. eg.forests
  6. 8. it is important
  7. 11. outcomes
  8. 13. convincing
  9. 15. opposite of Good
  10. 19. a harming gas