L4, Unit 3.3

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Across
  1. 2. ship that can travel underwater
  2. 4. a favourite/saved web page
  3. 7. quickly
  4. 9. person who studies or teaches mathematics
  5. 11. Flying mammal
  6. 13. main offices of an organization
  7. 15. Large marsupial
  8. 16. bring up someone else’s child for a period of time, because the child’s parents are unable to
  9. 17. something or someone mysterious and difficult to understand
  10. 20. often
  11. 21. something that helps to produce or achieve something
Down
  1. 1. bad, nasty, evil
  2. 3. Has a trunk
  3. 5. way to explain or understand something
  4. 6. forgive
  5. 8. planned or meant to do something
  6. 10. taken by the police to a police station because they believe that person has committed a crime
  7. 12. age, period (of time)
  8. 14. Man's best friend
  9. 18. hurt
  10. 19. device with small balls in rows, used for counting
  11. 21. Likes to chase mice