Ⅰ. Complete the following dialogue.
Dialogue A
(A: Shop assistant,B: Customer)
A: Can I help you?
B: Yes. I bought a camera in your store and used it for some time, but now the camera doesn't work properly, it's not focusing at all! __________.(我想你们给我换一个。)
A: Let me have a look. En…yes, it can't work well! It's a production problem, indeed!
B: In fact, I used it carefully and took care of it properly by the instruction book.
A: Eh, it gets a good protection. __________？(我能看一下收据吗?)
B: Here it is!
A: Oh, I am sorry! __________(它已经过了保修期). We can't provide the aftersales service for you!
B: Yes, it's my fault! But you can look for the record of my expenditure in your computer! As a matter of fact, I'm the member of your store! __________.(我是你们的老客户了，能不能享有点特权呢?)
A: Please wait a second! Yes, and you have a good credit expenditure in our store! So, hmm…we can give you a privilege that we will give a replacement for you!
B: Thanks for your good service and extra help!
A: It's my pleasure!
Dialogue B
(A: Customer service representative, B: Mr.Wilson)
A: Hello, City Water Service, how may I help you today?
B: I'm calling concerning my water bill. __________. (我觉得你们上个月多收了我钱。)
A: I'm sorry to hear that. Why do you think we charged you too much?
B: The bill is 20 tons of water more than last month.
A: I'm sorry to hear that. Let me ask you a few questions and then I'll see what I can do.
B: OK, Thank you for your help.
A: Of course, __________(感谢您提醒我们注意这个问题). Now, how much do you usually pay for your water usage?
B: I usually pay about $20 a month.
A: Thank you, and __________?(这次账单我们收费多少呢?)
B: $120. I can't understand why.