Does it pay to be kind to strangers

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Across
  1. 3. A kind or helpful action
  2. 4. A feeling of admiration for others
  3. 9. Giving something to another person
  4. 11. Showing concern for others
  5. 12. Willing to help other people
  6. 13. The act of giving freely
  7. 14. The quality of being friendly and generous
  8. 15. A group of people living together
Down
  1. 1. Acting in a kind and pleasant way
  2. 2. Helping someone emotionally or physically
  3. 5. A person you do not know
  4. 6. A happy facial expression
  5. 7. Sympathy and care for others
  6. 8. A feeling of joy and pleasure
  7. 10. Belief in the honesty of others