words with /k/ and /kw/ sounds

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Across
  1. 3. a long-bodied marine
  2. 4. sound make by a duck
  3. 5. fast
  4. 7. divided into four eaqual parts
  5. 8. the rear surface of the human body from the shoulder to the hips
Down
  1. 1. where books and notebooks are carried
  2. 2. break without a complete separation of parts
  3. 4. test of knowledge
  4. 5. making little or no noise
  5. 6. state of isolation