阅读下面短文，从短文后各题所给的四个选项（A，B，C，和D）中，选出可以填入空白处的最佳选项。
You Did More Than Carry My Books
Mark was walking home from school one day when he noticed a boy ahead of him had dropped all of the books he was carrying, along with a baseball bat and several other things. Mark 1 down and helped the boy pick up these articles. 2 they were going the same way, he helped to carry some of them for him. As they walked, Mark 3 the boy's name was Bill, that he 4 computer games, baseball and history, that he was having a lot of 5 with his other subjects and that he had just broken 6 with his best friend.
They arrived at Bill's home first and Mark was 7 in for a Coke and to watch some television. The afternoon passed 8 with a few laughs and some shared small talk, and then Mark went home. They 9 to see each other around school, had lunch together once or twice, and then both ended up from the same high school. Just three weeks before 10, Bill asked Mark if they 11 talk. Bill 12 him of the day years ago when they had first met. “Do you 13 wonder why I was carrying so many things home that day?” asked Bill. “You see, I 14 out my locker(橱柜) because I didn't want to leave a mess 15 anyone else. I had planned to run away and I was going home to 16 my things. But after we spent some time together 17 and laughing, I realized that 18 I had done that, I would have 19 a new friend and missed all the fun we would have together. So you see, Mark, when you picked up my books that day, you did a lot more. You 20 my life.”
