Glad to hear from you! In your letter, you asked me how to keep healthy. I want to give you some advice.
You know, our teenagers grow up very fast, so we need a lot of nutritious food, such as fish, meat and beans, especially fresh vegetables and fruits. You'd better not eat too many sweets. Also, you should do regular physical exercise instead of studying in the classroom all the time. For example, you can play basketball or swim after school. More importantly, adequate sleep is very important. So I suggest you sleep at least eight hours every day, and don't stay up too late. Only in this way can you keep healthy.
Yours,
Li Hua
This is an email, the main points of the article have been basically given, and the tense is mainly the present tense. Students basically just need to translate into Chinese. It is necessary to pay attention to choosing regular words with higher levels and then using appropriate conjunctions such as What's more, which can make the article become a whole and more fluent.