Ch says k

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Across
  1. 2. where your food goes after you eat
  2. 3. a heavy object attached to a rope or chain and used to moor a vessel to the sea bottom, typically one having a metal shank with a ring at one end for the rope and a pair of curved and/or barbed flukes at the other.
  3. 5. where you spend most of your time learning with your friends
Down
  1. 1. a person in a novel, play or movie
  2. 3. when your body hurts
  3. 4. a large organized group of singers, especially one that performs together with an orchestra or opera company.