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Unit 1 Reservation and Ticketing
Unit 2 Check-in
Unit 3 Boarding
Unit 4 Food and Beverage
Unit 5 Duty-free Sales
Unit 6 Emergency Situation
Unit 7 Customs, Immigration and Quarantine
Unit 8 Baggage Claim

Reading A The Sale of Duty-free Items

Reading A The Sale of Duty-free Items
Reading A