Extras

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Across
  1. 6. to weigh
  2. 7. exchange
  3. 10. last weekend
  4. 12. coin
  5. 15. police station
  6. 16. proof of identity
  7. 17. post office
  8. 18. postcard
Down
  1. 1. the day after tomorrow
  2. 2. besides, moreover
  3. 3. departure tax
  4. 4. church
  5. 5. the day before yesterday
  6. 8. credit card
  7. 9. tomorrow
  8. 11. yesterday
  9. 12. postage stamp
  10. 13. in cash
  11. 14. next monday