Last week I lost my lunch money my mother gave me. I was worried and sad.
上星期我把妈妈给我的午饭钱丢了，我又着急又伤心。
My best friend Xiaomei gave me her only 10 yuan and told me that was her pocket money.
我的好朋友小梅把她仅有的10元钱给了我，并告诉我这是妈妈给的零花钱。

I believed that. Then I knew the money was saved by her from breakfast and she wanted to buy a new bag. It moved me.
我相信了。后来我才知道那是她从早饭中省下来想给自己买个书包的，这件事让我感动极了。