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. ___________________?
B: My computer stopped working this morning.
A: ___________________________.
B: I bought it just a month ago.
A: ___________________________?
B: No, it wasn’t. Actually, I bought it at a high price.
A: ___________________________?
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: ____________________________. Next time I must be careful when shopping.
A: Yes. You should compare some products first. Then you can choose the best one.
What does he look ？He is tall and strong．
﹣Do you remember what Mr．Brown said to us at the graduation ceremony？
﹣Yes．We （受到告诫不要放弃对创造的兴趣） in our life．（warn）
﹣Is there anyone you admire in your life？
﹣Well．I （崇敬那位帮我摆脱困境的警察）．（look）
﹣Did he like to play games in his spare time？
﹣No，he didn't．He said （玩游戏没有阅读有意义）．（as）
By the time I joined Greener Group，they （义务打扫图书室） for 2 years．（volunteer）