根据短文内容，用适当的单词或句子补全对话。
A: You look unhappy. 小题1:___________________?
B: I argued with my friend.
A: Would you mind talking about it to me?
B: 小题2:__________________. It all started when I lost his camera. You know, his mom got it for him as his 15th birthday gift.
A: Oh, I see. 小题3:___________________________?
B: A new camera? It’s too expensive. I don't have enough money.
A: Maybe you can go to the lost and found to look for it
B: 小题4:__________________. I nearly forgot. I’ll go there at once.
A: Good luck!
B: 小题5:.___________________.
A: You’re welcome.
小题1:What’s wrong with you?
小题2:of cause not.
小题3:Why not buy a new camera for him?
小题4:That’s a good idea.
小题5:Thank you!
题目分析：本篇对话主要讲述的是B弄丢了朋友的相机。A帮助B提建议。第一个建议是买一个新的给B的朋友。由于相机太昂贵了，B没有足够的钱，所以行不通。第二个建议去 lost and found去看看有没有，B忽视了这个主意。
小题1:根据前一句You look unhappy.通常会问怎么了，就是what’s wrong with you?
小题2:根据B接下来说的话可以判断B不介意，所以可以填写of cause not。
小题3:根据B 的答语 A new camera? It’s too expensive. I don't have enough money.可以判断A是提建议让B再买一个新的。
小题4:根据后一句I nearly forgot. I’ll go there at once.说明A的这个建议是个好主意。
小题5:根据A的答语You’re welcome.可以判断B在感谢A。