One day a poor man was traveling on horseback. At noon, he tied his horse to a tree and then     1     down to eat something. A few minutes later, a rich man came along and tied his horse to the same tree.

“Please tie your horse to another tree,” said the poor man. “My horse is wild. It will kill yours.”     2     the rich man said, “I shall tie my horse as I like!” He tied up his horse and had his lunch nearby. After a moment they heard a terrible     3    , the two horses were fighting. They went up to them, but it was too     4    . The rich man’s horse was killed. “See what you horse has done!” cried the rich man. “You will have to     5     for it.” And he brought the poor man before Mr. Know.

Mr. Know asked the poor man some questions. But he made no     6    . At last Mr. Know said, “This man is dumb(哑的). He cannot speak.” “Oh,” the rich man shouted     7    . “He can! He spoke to me when I met him.”

“Are you sure?” asked Mr. Know. “What did he     8    ?”

“He told me not to tie my horse to the same tree because his horse was wild and would kill my horse.”

“Oh,” said Mr. Know. “So he has     9     you. Then can you expect to get money     10     him?”

The rich man said nothing and left silently.

The summer holiday was coming but Zach was a little sad. He would have to move      1     the holiday, leaving his friends and his tree house. The tree house was Zach’s favorite place to go to when he wanted to be alone. He also liked taking his friends there. They would play for      2    .

Zach told his mom, "I don’t want to move. I’m going to miss my friends. I’m also going to miss my tree house. I want to take it with me." "Zach, but we have to      3     your father’s changed his job. He is already there waiting for us. You will have a much      4    bedroom, and you will meet new friends at your new school." promised his mom. Zach wasn’t so sure.

When Zach and his mom arrived, Dad took Zach to the backyard. There, Zach saw a big tree house. "Wow!" Zach shouted, "This is great!" All of a sudden, Zach heard a      5     voice. "Are you moving in? My name is Joey and I live next      6    .  Can I have a look at your tree house?"

"I think I’m going to      7     it here after all!" Zach told his mom and dad that night.

There was a man who had four sons. He wanted his sons to learn to be     1     and wise. So he asked them to take turns looking at a pear tree     2     was far from their home. The first son went in winter, the second in spring, the third in summer, and the     3     son in fall. After they had all gone and come back, he called them together     4     what they had seen. The first son said that the tree was ugly and weak. The second son     5     disagreed with him. He said it     6     with green buds（花蕾）and full of hope. The third son didn’t agree with either of     7     . He said there were many flowers that smelled sweet and looked beautiful. The last son also had his own opinion. He said the tree was ripe（成熟的）and full of fruit, ready to be picked.

The man then explained to his sons that they were all correct because each of them saw just one of the     8     of the tree’s life. He told them. “You cannot judge a tree or a person by only one season. You can see how someone changes and grows     9     time goes by—some periods are happy, while others are sad. If you give up on someone when they are living through the ‘winter’ of their lives, you     10     the promise of their spring, the beauty of their summer, and the greatness of their fall.”

If you have problems with your life and don’t know how to be happy, you should read the book How to Solve Teenagers’ Problems.

In the book, the     1    , a 28-year-old young man, tells us how to live a happy life and answers some     2     of teenagers.

The book     3     with many problems, such as problems with parents, friends or teachers. The book tells     4     some useful ways. For example, we can change (改变) what we have     5     into pictures to make our memory (记忆力) better.

Many teenagers think happiness (幸福) comes from a good exam result or good words from other people. But you can still be happy if you don’t     6     about such “good” things. If you can learn from problems, you will be     7     in the future.

Some school students have such problems as being too     8     or too short. But the writer says you shouldn’t worry about that. If you are tall, maybe you will be a basketball     9    ; if you are short, your clothes and shoes will take     10     space in your bedroom! This is the writer’s most important lesson—you choose to be happy!