Crossword "k c q ck x* ch" sounds

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Across
  1. 1. Wear with your shoes
  2. 5. Married to a king
  3. 6. Made from cardboard to store things
  4. 7. Ring on the phone
  5. 8. You do this on a door
  6. 11. Has two wheels and you ride it
  7. 12. You go here to learn
Down
  1. 2. Opposite of dirty
  2. 3. Fifteen plus one
  3. 4. Means fast
  4. 8. Opposite of throw out
  5. 9. Did catch
  6. 10. Married to a queen