Listen to the dialogue and fill in the blanks. A: Good evening, sir. ? B: Not so good. The fish wasn’t tasty and fresh. What’s the problem? A: . Let me change it for you. B: What? I don’t want to try that fish again. A: I’m really sorry, sir. I’ll . Would you like something else? B: No, I wish to pay my bill. A: Yes, sir. , RMB 300. Please check it. B: Thank you. May I pay by credit card? A: Certainly, sir. B: Here is my Master card. A: Thank you. , please. Could you please sign your name here? B: Ok, here you are. A: Thanks. .