1. (8·月考)  阅读下面短文，从短文后各题所给的三个选项（A、B、C）中，选出可以填入空白处的最佳选项。

Hey, I' m Frank. I' m a volunteer at Animal Helpers. Every Sunday, I spend five hours working there. I help21 people learn to ride horses. These people can't use their hands or feet easily. So when they learn to ride horses, they will have lots of22 . Of course, it's also difficult for me to help them learn to ride horses. But I'm 23 because I'm able to help them do some things.

Generally speaking ( 一般来说), after half a year of24 , they can ride horses easily. And the horse helpers can understand their words and help them do many things. They can help them cross the street and bring them home. Well, these horse helpers are25 disabled people's lives. If you want to know more, please come to Animal Helpers.