阅读下面短文，根据上下文补充所缺的信息。每个空只能填写一个形式正确，意义相符的单词。(每空1.5分，一共15分)
A boy was sent by his parents to a boarding school. He used to   the brightest student in his class. But things   after that. His grades started dropping. He hated being in a group. He was lonely all the time.
His parents began to worry about him,   they didn’t know what was wrong. So his dad decided to   to the school and talked with him.
They sat on the bank of the lake near the school. The father wanted to ask him questions    his classmates, teachers and sports. But he first asked, “Son, do you know     I am here today?”
The boy said, “To check my grades?” “No, no,” his dad replied, “I am here to tell you that you are the most   person for me.  I want to see that you are happy. I don’t care about grades. I care about    happiness. YOU ARE MY LIFE.”
Now the boy knew there was someone who loved and cared about him deeply. “Thanks a lot, Dad.” YOU ARE MY LIFE. These words made the boy’s eyes filled with tears. He hugged his father. They didn’t say anything to each other for a long    .
Now the boy is at the top of his class and his life is   of happiness.