Silent Letters and ch as /k/ or /sh/

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Across
  1. 4. a large African antelope with horns-silent g
  2. 5. a group of singers performing together-ch says /k/
  3. 6. the spirit of a dead person-silent h
  4. 8. a booklet or pamphlet-ch says /sh/
  5. 10. a plan or plot to do something-ch says /k/
  6. 11. great confusion or disorder-ch says /k/
  7. 12. a pain or distress-ch says /k/
  8. 15. the season between summer and winter
  9. 18. serious-silent n
  10. 21. a song of spiritual praise-silent n
  11. 22. a person engaged in chemical research-ch says /k/
Down
  1. 1. a plan that gives expected times for different things to happen-ch says /k/
  2. 2. to give someone a job or task-silent g
  3. 3. a reflected sound wave-ch says /k/
  4. 4. a small biting fly-silent n
  5. 7. large muscle sac that processes food-ch says /k/
  6. 9. a professional cook-ch says /sh/
  7. 10. pasta in the form of long string-silent g
  8. 13. a sparkling wine-silent g
  9. 14. to express strong disapproval of-silent n
  10. 16. a device to aid the memory-silent m
  11. 17. a post used for structure of a building
  12. 19. separate section of a city for minority groups to live-silent h
  13. 20. to secure firmly-ch says /k/