用A～E将下列句子排列成一段完整的对话。
Hello, Lucy! You look worried. What’s the matter? (   )
What is in your bag? (   )
Yes, it is. Thank you! (   )
Hi, Tom! (   )
You’re welcome! (   )
I lost my bag. It’s big and red. It’s my favorite one. (   )
Is this your bag? (   )
There is a book and two pencils in the bag. (   )