Question

letter to my brother advising him to study for his test in hindi

Answer 1

hi dear,
sorry but i dont know hindi 
pls excuse me 
XOXO

Answer 2

I hope u r fine and doing well in your studies.
As ur exams r coming near , I hope u have already started preparing for them. I want to advice u that staying awake till late night is not good for your health and also it will make u feel sleepy during the examination. Additionally,you should always revise your syllabus.And the most important thing is to have believe in your self, study well and and believe in your self and then you will be able to achieve anything you want.