-ed and -ing endings

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Across
  1. 4. I am _______ on the ice
  2. 6. past tense of read
  3. 8. Add -ing to tune
  4. 11. Past tense of sob
  5. 13. I ______ a goal
  6. 14. Past tense of drive
  7. 15. Add -ing to clean
  8. 16. I am _______ the cake; present tense of ice.
Down
  1. 1. If food is rotten, it is ________.
  2. 2. They ______ over the puddle
  3. 3. I double-_______ my shoe lace.
  4. 5. I _____ in my computer
  5. 7. Another way of forming the past tense of sneak
  6. 9. past tense of ride
  7. 10. Add -ing to drive
  8. 12. One way of forming the past tense of sneak