A、Stop being angry and forgive. B、Learn to be successful. C、You choose to be happy. D、Make your memory better. C短文最后提到，Matthews的

Have you ever had problems in your life and don’t know how to be happy? If so, you will find the book Being a Happy Teenager by(14)Australian writer Andrew Matthews useful. In his book, Matthews tells us how to live a happy life and answers the questions from teenagers. There are many subjects such as parents and friends, and the book says we should stop being angry and forgive. The book tells us useful skills, such as how to put what you have learned into pictures of your mind to make your memory better. Many teenagers think tha,t happiness comes from a good exam result or. praise from other people. But you can still be happy when there are no such "good" things. Success comes from a good attitude. 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.(15)But Matthews tells us happiness comes from thinking about things in a positive way. If you are tall, people notice you, and you can get a better view at the movie: if you are short, your clothes and shoes take less room in your bedroom!(16)Anyway, this is Matthews’ most important lesson in this book: You choose to be happy!
14. Where does Matthews come from?
15. What does Matthews think happiness comes from?
16. What is Matthews’ most important lesson?