A: Hi, David. You look worried. What happened(怎么了)?
B: Oh! Hi, Mike. Imy notebook this morning.
A: Sorry to hear that. You can go to the Lost and Found. Maybe someone found it.
B: I asked Mr. Smith. It isn't there.
A: Emm… Whatwriting a Lost and putting it up on the school board?
B: Good idea. But I don'thow to write it. Can you tell me?
A: Sure. First, tell us what your notebook is like. Er. . . Do you have aof it?
B: Yes, I have one. Look! A black notebook and a big tree is on the cover(封面). I lost it in the library.
A: Great! Next, write down your name and yournumber so that people canyou. By the way, do you have an?
B: Yes. It's david@facebook. net.
A: You can write it down on the Lost, .
B: for your help. You are so kind.
A: You're welcome. And you can also ask theof the library for help.
B: Yes, you are right.
