Unit six

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Across
  1. 2. you call it MRT
  2. 4. you're going to be OK
  3. 5. made from petroleum
  4. 9. you may live in one
  5. 12. something you may sell
  6. 13. card imaginary cash
  7. 14. head protection
  8. 16. fish end up here
Down
  1. 1. a tool to make things easier
  2. 3. for hands or wallets
  3. 4. a thing you view images on
  4. 5. make you believe something
  5. 6. help
  6. 7. you walk on it
  7. 8. out a warning
  8. 10. too many cars
  9. 11. cars can cause it
  10. 15. always doing something