Question

A.Because they want two dogs. B.Because their dog died.

C.Because their dog is ill. D.Because his daughter wants another dog.

Answer

B

【解析】

【原文】

W: Hello, Mr Smith. Where are you going?

M: I'm going to buy a dog for my son.

W: Really? You've got a dog, haven't you?

M: Well, we used to have one but it died last week.

Q: Why is Mr Smith going to buy another dog? （B）