完型填空（本题有15小题，每小题1分，共15分） 阅读下面短文，然后在各题所给的四个选项中选出一个最佳答案。 Do you have problem in your life and not know how to be happy? If，you will find Being Happy Teenager written by the Australian writer Andrew Matthews ． In his book，Matthews us how to live a happy life and answer the questions from teenagers． There are subjects such as parents and friends，and the book says we should stop and forgive（宽恕）．The tells us useful skills such as how to put what you have learned into pictures of your mind to your memory better． Many teenagers think happiness comes from a good exam result praise（赞扬）from other people．But you can be happy when there are no such“good”things． Success comes from a good attitude．If you problems，you will achieve success in the future． Some school students havesuch as being too tall or too short．But Matthews tells us that happiness comes from thinking about things a positive way．If you are，people notice you and you can get a better view at the movie；if you are short，your clothes and shoes take less in your bedroom! This is Matthews’ most important lesson：you choose to be happy!