Prayer for leave after the second period.

The Headmaster,
Ghosta D. M. High School.
Manikganj.
sub : Prayer for leave after the second period.
Dear Sir,
This is to inform you that I suddenly fell feverish. So I am quite unable to stay in the class room any longer. I want to leave school after the second period.
I, therefore pray and hope that you would be kind enough to grant me leave for the remaining periods.
Sincerely yours.
Mahmudul Islam
Class 8
Roll 9