Your younger brother has fallen in bad company. Write a letter to him, advising him to give up bad company and take more interest in studies.
35, Nizamuddin East,
New Delhi.
(Date)
Dear Mohan,
I have learnt that you have fallen in bad company. You have developed bad habits like drinking and smoking. The Progress Report of your House examination is there before me. You have failed miserably in almost every subject. The Principal of your school has remarked that you must mend your ways immediately.
Dear Mohan, Papa and Mamma are really pained to learn all this. As such, I, your elder brother wish to advise you to give up bad company and take more interest in studies to show better results, otherwise, it will be too late and you will have to repent in life.
Love from papa and mamma.
Yours affectionately,
X.Y. Z.