Find the Word by Finding the Silent Letter

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Across
  1. 2. Robot,
  2. 4. (GH),
  3. 5. (GH),
  4. 7. (E),
  5. 10. (H),
  6. 11. (GH),
  7. 13. Row,
  8. 14. (B),
  9. 15. Mystery,
  10. 17. Orbit,
  11. 19. Brilliant,
Down
  1. 1. Habitat,
  2. 3. (P),
  3. 6. (K),
  4. 8. (W),
  5. 9. (MN),
  6. 12. Comprehend,
  7. 14. Loyal,
  8. 16. (C),
  9. 18. (W),