I wanted to buy a pair of sports shoes for a long time，so I spent months saving up the money and I finally had enough. Last Saturday I went shopping with my friend Jake.

We took the bus into town and it was very crowded（拥挤的），so we had to stand all the way. Jake and I were talking when I suddenly noticed that my bag was open and my money was gone！

When the bus just stopped，a boy near me was going quickly towards the door. We thought he had stolen my money so we got off the bus and followed him. The boy started running and then Jake ran after him shouting，“Stop！Thief！"A policeman saw what was going on and managed to get the boy.

But when the policeman searched the boy，he didn't have any money with him！He had probably thrown it away before he was caught. The boy said we had made a mistake. He explained that he had only started running because he was late for a meeting with friends. The policeman allowed him to go and I felt really stupid.

I don't know whether he stole my money or not. I wish I hadn't been so careless and had kept an eye on my bag！I've lost my front door key and 60 pounds. Jake offered to lend me the m-y to buy the sports shoes，but I don't think it's fine to take it.