Can you solve this crossword?

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Across
  1. 3. is made when there is rain and sun
  2. 5. the fastest animal in the world
  3. 6. they go twitawoo
  4. 9. baby duck
  5. 10. a sour fruit
  6. 13. read a b___
  7. 14. seven plus seven
  8. 16. a red flower with black in the middle
  9. 18. a bug with spots
  10. 20. you can write with one of these
  11. 21. there are lots of these in the night sky
Down
  1. 1. our school is in _______
  2. 2. we wear a school u______
  3. 4. polar or grizzly
  4. 7. the colour of the sky
  5. 8. rabbit food
  6. 11. you type with this
  7. 12. you put this on your chips
  8. 15. a small garden animal with a shell
  9. 17. a baby pig
  10. 19. the opposite of black