سؤااال مالو اجابة عندي؟؟؟؟؟؟

[dark mysterious girl]

Hi everyone

How r u? I hope u r ok

I just want to ask about the (DN) what is it?

My brother has taken DN and I really want to know what is

it and how can he deal with it?

he has attended all the lectures

i don't know why he got DN

please answer me

thanks