18.Dear Lin Tao,
I'm sorry to hear that you are having trouble in deal with the new high school life.I'd like to give you any advice.Firstly,you must work hard at all lesson and try your best to get good grades.By this way,you are likely to attend an ideal university for a better future.Secondly,you need get along well with your classmates and teachers,that will help you to build good interpersonal relationships.Thirdly,you have to learn what to live on your own.The ability to survive in society is also of the great importance for us. I hope you will find these ideas usefully.All the best!
Yours,
Li Hua.