阅读下面短文，从短文后所给各题的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项。
When I was about twelve， I headed to a restaurant for dinner with my family. It was winter， and on that particular night， the 1was really blowing hard.
As my mom and I headed towards the restaurant from our car， a girl about my age2her mother came up to us. They asked if we had any spare change. My mom immediately asked where they kept their things. They pointed to an old car in a parking lot across the street. The girl said there were 3 of them living in that car.
My mom said she had something to do 4 handing the people a few dollars. She sent me inside the restaurant with my dad and my three siblings. But she didn't come with us.
Later， I 5 that she had gone home and emptied our cupboards into a few bags. Then， she brought the bags of food to the family. I wasn't there when 6 happened， but I can imagine the joy it brought to their faces.
A few days later， when I learned about what she had done， I 7her why she helped those people. She told me that they were not lucky. I remember the face of that girl who had asked us for change — she was the same 8 as me， yet we looked so different.
Here I stood， dressed in almost new clothes， headed to dine in a restaurant and then went back home to the bedroom I 9 with my younger sister. I remember thinking that the girl didn't have any food to eat， and she was heading back to a cold car shared with five other people.
After painting this picture in my mind， I 10 why my mom had done what she did. I will never forget what she did that night， and how she taught me one of the best lessons I ever learned.
