writing-an-email-7

I need help writing a polite email to my professor. I am writing email to my professor requesting incomplete grade. I tried my best to do well in the class but in the last two exams I had flare up of illness and I had super foggy brain that prevent me to do the exam even though i studied hard. I want help because this my last chance to study in the college and I will get kicked up for the college if i fail you class. I always try my best and college mean alot for me but my illness was out of my control even though i worked so much hard.