[音频]Listen and complete the following conversation.(A guest is making a complaint to the headwaiter in a restaurant.)G=GuestH=HeadwaiterG: Excuse me, are you the headwaiter? I want to (1).H: Yes, sir. What can I do for you?G: (2), but my friend and I have been waiting 20 minutes for our drinks.H: I'm very sorry, sir. Our staff are very busy this evening. (3)?G: One Gin and one Sherry.H: Don't worry. I will attend to it at once.