Lucky numbers

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Across
  1. 1. Man's best friend
  2. 4. What comes down from the sky but is not rain?
  3. 5. What can you find in a fish tank accept a fish?
  4. 11. What goes up when rain comes down?
  5. 12. A pot of gold at the end
  6. 13. Break it or drink water from it
  7. 14. What is so fragile that saying its name breaks it?
  8. 17. I don't have lungs, but I need air
Down
  1. 2. The early bird gets the worm
  2. 3. What gets wetter as it dries?
  3. 6. How many strikes and you're out
  4. 7. I fall but never get hurt. What am I?
  5. 8. What has rivers but no water, forests but no trees, and roads but no cars?
  6. 9. What can flow without ever being still?
  7. 10. When one close another opens
  8. 15. What can fill a room but takes up no space?
  9. 16. A stitch in time saves