阅读下面短文。在短文的空格内填入适当的词，使其内容通顺。

     There was once a rich man who loved his little boy very much. He wanted to try his best to please (使……高兴) him. So he gave him a horse to ride, beautiful rooms to live in, pictures, books, toys and everything that

money 1_______ buy.

     But for all this, the little boy was still 2_______ . He wore a frown (皱眉) wherever he went, and always

wished for something he did not have. The man didn' t know how to make his son happy.

     One day, a magician (魔术师) came to the man and said to him,"I can make your son happy and turn his

frowns into smiles, but you must pay me a great price for 3_______ him the secret."

     "All right," said the man, "No matter what you ask for, I'll give you." The magician took the boy into a

secret room. He wrote something on a piece of paper, and then gave it to the 4_______ There on the paper

came the words,"Do one kind thing for someone every day." The boy 5_______ the advice and became one

of the happiest boys.

     Only those who stop thinking about their own happiness can be truly happy.