假设你是李华，你的朋友Jenny将要参加半期考试，在来信说说他最近忙于学习，感到很累。请你用英语给她回一封邮件，给他一些建议来调节当前的不良状态。内容要点如下：
1.合理饮食；2.锻炼身体；3.保持良好心态。
2.注意：1.词数100左右；2.可适当增加细节，以使行文连贯。

【考点】提纲作文．

【答案】Dear Jenny，
How nice to hear from you!In your letter you' ve been so stressed preparing the coming exam.Now I would like to give you some advice.
As you know，we teenagers grow very fast，so we need plenty of nutritious foods，such as fish，meat，and beans，especially fresh vegetables and fruits.You'd better not eat too much sweet.Also，you should take physical exercise regularly instead of studying in the classroom all the time.For example，you can play basketball or swim after school.What's more，having a positive attitude towards life is far more important.So I advise you to keep a good state of mind especially when you meet with trouble.Only in this way can you keep fit and lead a happy life.
I hope my suggestions will be of some benefit to you.Looking forward to your reply.
                                                                                                                                               Yours，
                                                                                                                                             Li Hua