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补全对话。 A: Good morning, madam. B: 1_____ A: Well, I'll try. What's the problem? B: 2_____ A: I see. Well, we must get it down. B: 3_____ A; By sending one of our police around to your house. B: 4_____ A: Oh, I think so. B: 5_____ A: How will you do that? B: Oh, it is 21 Oxford Street. C: It's my cat, Jennifer. She went up a tree, and she couldn't get down. D: Hello, could you help me? E: OK. Thank you. F: Will he be able to help? G: Good morning, sir.