根据下面的对话情景，在空白处填上一个适当的句子，使对话的意义连贯、完整。 A: Look at this picture. What's it? B: Oh, it's a robot! A: You're right. it's the newest robot in the world. B: 1.______________? A: It can help with housework. B: 2.______________? A: Of course. Besides (除了) sweeping the floor, it can also take care of kids and old people. B: 3.______________? A: No, I won't. I can't afford it. B: 4.______________. Is it very expensive? A: Yes. It's 50,000 dollars. But we can have a look at it tomorrow. it is on show in the Science Museum. B: Sounds great. 5.______________? A: What about at my home at 9:00 am? B: OK. See you then.