benji,s criptic crossword

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Across
  1. 4. fruit crab Appels
  2. 6. Chinese philosopher
  3. 8. mad member of school
  4. 10. mobile killing squad
  5. 11. really itchy
Down
  1. 1. could not live without it
  2. 2. replaced by hot air
  3. 3. things people
  4. 5. zzzzzzzzzzzzzzz
  5. 6. the tip of a tower cut of
  6. 7. something Briton is famous for not having
  7. 9. the most wide spread language