If you have 3rd or 2nd/3rd division all along in your public exams till undergrad and still aspiring to adorn your credentials with a PhD, you can't find a better supervising professor than someone special - and I know you young fellows are smart and know who that is...! Enjoy your PhD education...! Btw, I am not sure if this highest degree is pursued in English or not in BD. If in English, please learn English properly prior your PhD venture...!