1. (2023八下·杭州期中) 通读下面短文，掌握其大意, 然后在各题所给的四个选项（A、B、C和D）中选出一个 最佳选项。

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 1.

After the first week, I noticed that the food was2very quickly. Then I began keeping an eye on my mum. To my 3, I found that she would put some of the food into a paper4 and go out with it at about nine every morning. And finally, I decided to 5her. I saw her taking the food to the street 6. She would also 7a lot of time talking and playing with them.

One day, I talked to a neig hbour and found out that my mum was 8 in the area. The children were very friendly with her and even thought of her as their own9. Then it hit me – why wouldn't she want to tell me about it? Was she worried that I would stop buying food 10 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 11 from me. And she told me something about the children. Some of them lived with an old lady in a small house. Others 12on the street. For years, she was helping the poor street children by giving them food. After she told me everything, I was so13 by how selfless (无私的) she was. She helped others in need. As her son, I was so 14of my mum.

I15 to buy food for my mum after that. But I always added one more bag for her other children.