选择下列句子完成下面对话。（共5小题，每小题1分） A: Good morning. What can I do for you? B: I want a mobile phone, but I don’t know which one to buy. A: ________ 小题1: Which brand do you like best, an HTC, a Nokia or an iPhone 5? B: I know little about them. Which one sells best? A: Mm! ________ 小题2: B: How much is the iPhone 5? A: ________ 小题3: B: Oh, they are too expensive. I want the one which is the newest but not too expensive. A: What about this one? It works well and is very cheap. B: ________ 小题4: A: 1,000 yuan. B: Is there any discount ( 折扣)? How about 800 yuan? A: ________ 小题5: B: OK, I’ll take it.