Plural Challenge

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Across
  1. 2. you put your right sock on your right _____
  2. 3. in the library books are kept on a ________
  3. 5. I have a ______ of bread
  4. 6. _______ of four is two
Down
  1. 1. a bone in your mouth that helps you chew
  2. 3. you can wear this in the winter to keep your neck warm
  3. 4. the dog lived 20 years, he had a long _____
  4. 5. this falls from trees in autumn