Dear John,

I'm ok. I'm even better than last week! Don't be worry. I was sick but now I'm better. Maybe tomorrow. We will met again. 
                                                 Love you

                                               Your friend

                                                    Lan

Dear John, 

Thank you for your letter. Last week, I had a really bad cold. I went out during the rain but my umbrella broke and I was soaking wet. After a week of taking medicine and resting, I have felt better now.

I'm sorry for making you feel worried. Fortunately, I will be able to go to school tomorrow, so see you soon! I hope you're doing well.

Best wishes,

Lan