(At the check-in counter.) A:Excuse me, sir. Should I check in here for Flight UA268 to Chicago? B:Yes, madam. MayI see your passport and flight ticket, please? A:Sure, 71 _____________________ B:Very good, Mrs, Chen. 72 _____________________ A:I prefer anaisleseat. B:OK. Do you have any luggage to check in? A:Yes. 73_____________________ How much luggage can Icarry on? B:Only one. A:Then I need to check in two pieces of luggage. B:OK. Wouldyou pleaseput them onthe scale? A:Of course. 74 _____________________ B:No. That’s all. Here is your luggage claim tag, boarding pass,and passport. A:Excuse me. 75 _____________________ B:At 5:00 p.m. and you will board from Gate 2. A:Thank you. B:My pleasure. 选项： A.Welcometo ABC airline. B.One suitcase. C.When is the boarding time? D.Where are you going to go? E.Is it overweight? F.Which seatdo you prefer, a window seat or an aisle seat? G.here you are. 71____________ 72 73 74 75