(Hold the) Homophones

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Across
  1. 2. there to lend a helping hand
  2. 4. New York has 5 of these, also Peter
  3. 5. a place for animals to hide, also Joe
  4. 6. I've got some useful advice for you
  5. 8. A queen's time on the job, also Roman
  6. 9. Lindsay, Kinmount, and Bobcaygeon
  7. 11. detecting motion
  8. 12. Rage Against the Machine's radio, sneaky soldiers
Down
  1. 1. we need to talk
  2. 3. jewellery from back in the day, needs a pin
  3. 6. let's start a riot
  4. 7. silverbacks, also Kong
  5. 9. pay the toll
  6. 10. you can't read that book