阅读理解：人生哲理短文 — 英语填空题
题目
阅读短文，并根据内容补全句子。
Tom wanted to learn the guitar. At first, his fingers hurt, and he could not play a song well. He almost gave up. His sister said, “Practice for ten minutes every day.” Tom followed her advice. A month later, he could play his favorite song. This story shows that ___.