题目内容：

补全对话（5个小题，每小题2分，共10分）

根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意义连贯、完整。

A: You look very unhappy, John. ______1._____________?

B: My computer stopped working this morning.

A: ______________2._____________.

B: I bought it just a month ago.

A: ____________3._______________?

B: No, it wasn’t. Actually, I bought it at a high price.

A: ____________4._______________?

B: The ad said this kind of computer was very good, so I decided to buy one.

A: Well, not all ads tell the truth. Some are misleading sometimes. They just want you to buy the products, but they don’t tell you anything about their quality.

B: ____________5.________________. Next time I must be careful when shopping.

A: Yes. You should compare some products first. Then you can choose the best one.