Dear Jack,        

       Thank you for your last letter. I felt worried when I heard you had been a smoker for a few months.

You know smoking can cause many diseases, such as lung cancer, heart disease and so on. If you smoke a lot, you will feel uncomfortable in your throat. I think it's necessary for you to give up smoking. If you

want to quit smoking, you have to be patient enough. I will be glad to help you if you have any difficulties.

I hope you will soon quit smoking successfully.

                                                                                              Yours，                                                    

                                                                                              HanMei

       (答案不唯一)