Answer:
Subject: Missing Assignment
Good afternoon, Mr. X(replace with your teacher's name)
I am writing to you today in regards to my missing assignment. I understand the due date was several weeks ago, but I now have it completed and ready to turn in. I understand this assignment is very late, due to no one's fault but my own, but is there anyway I could still turn it in? I sincerely apologize for causing you the inconvenience, as you took care of your part in this process.
Thanks, (Your Name)
