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

问题：

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

A: Hello, Tony. Why are you in such a hurry?   1  .

B: I lost my backpack .I remembered putting it under a tree beside the playground.

A: Rreally?   2  .

B: An hour ago.I was playing soccer on the playground. It was gone after that.

A: Bad luck! Is there anything important in your backpack?

B: Yes.   3  .

A: Don't worry.Maybe someone took it by mistake.

B:   4  ?

A:You'd better go to Lost and Found for help.

B: Good idea.  5  ?

A: It's just on the second floor in the office building.Perhaps you are lucky to find it there.

B: I hope so.

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2. ___________________________________________.

3. ___________________________________________.

4. ___________________________________________?

5. ___________________________________________?