题目内容：

Have you ever had problems in your life and don't know how to be happy? If so, you will find "Being a happy teenager" by an Australian writer Andrew Matthews useful.

In his book, Matthews tells us how to have a happy life and answers the questions of teenagers.

The book says we should stop being angry. The book also tells us about some useful skills. For example, if you want to make our memory better, you can put what you've learned into pictures in your mind. Many teenagers think that happiness comes from good grades or praise(表扬）from other people. But you can still be happy when there are no such "good" things.

Success comes from a good attitude(态度). If you learn from problems, you will have success in the future. Some school boys have problems such as being too tall or too short, but Mathews tells us happiness comes from thinking about things in a positive(积极的) way. If you are tall, you can get a better view; if you are short, your clothes and shoes take less room in your bedroom! This is Matthews' most important lesson: You choose to be happy!

根据短文内容，判断句子正(T)误(F).

1.Matthews's book "Being a happy teenager" is helpful for those who feel unhappy.

2.Matthews's book "Being a happy teenager" answers questions of teenagers.

3.Many teenagers think good grades are not so important.

4.If you think in another way, an unhappy thing may become a happy thing.

5.According to Matthew, a tall boy has more advantages(优势) than a short boy.