阅读下面短文，从短文后各题所给的A、B、C三个选项中，选出可以填入空白处的最佳选项。
Andrew was a smart boy. He liked doing things in a way that he thought to be clever. But sometimes he made1 choices.
One day, his father gave him some2 and asked him to buy some goldfish. When he got to the market, he found that the killifish looked like small goldfish, and they were much3 . So he bought some killifish and kept the rest of the money for himself.
When he got home, his father4 what Andrew did at once. He knew his son didn't buy the right fish. At the same time, he thought his son might be good at marketing(市场销售). And he should5 a way to help his son grow well.
He had an idea. Then he said to his son, "Andrew, do you know what you have bought? Are they goldfish?" Andrew felt shy and said in a6 voice, "Er, no, but..." His father continued, "Well, I'm glad you know how to7 money. But you should do things honestly,8 others won't trust you." Then he helped Andrew start with some chores(琐事) like buying daily things, managing his own pocket money and helping his uncle in his store. Later, Andrew worked as a salesman. He kept working hard at it.9 , he became a successful businessman.
Several years later, when talking about the key to his10 , Andrew said, "Thanks to my father, I got to know myself well and developed in a right way."
