Last year, I worked in a middle school near my mother’s house, and I stayed with her for a month. During that time, I helped her do some housework and buy some _________.

After the first week, I noticed that the food was _________ very quickly. Then I began keeping an eye on my mum. To my _________, I found that she would put some of the food into a paper _________ and go out with it at about nine every morning. And finally, I decided to _________ her. I saw her taking the food to the street _________. She would also _________ a lot of time talking and playing with them.

One day, I talked to a neighbor and found out that my mum was _________ in the area. The children were very friendly with her and even thought of her as their own _________. Then it hit me—why wouldn’t she want to tell me about it? Was she worried that I would stop buying food __________ I found out?

When my mum got home, I gave her a big hug (拥抱). I told her she didn’t need to keep it a __________ from me. And she told me something about the children. Some of them lived with an old lady in a small house. Others __________ on the street. For years, she was helping the poor street children by giving them food. After she told me everything, I was so __________ by how selfless (无私的) she was. She helped others in need. As her son, I was so __________ of my mum.

I __________ to buy food for my mum after that. But I always added one more bag for her other children.