Here are the answers!

  1. The window.
  2. She was born on February the 29th
  3. Short
  4. Two: one on each side.
  5. None. NOAH built the Ark.
  6. Horse racing; or other horse sports.
  7. The aeroplane was on the ground.
  8. Glass
  9. Go outside and throw it upwards.
  10. Your left hand, forearm or elbow.
  11. Wrongly
  12. H20 or Water (H to O)