(your address)
Date-dd/mm/yy
Dear_______
I hope everything is going well for you. I'm writing to let you know that I was in an accident last week and am currently in the hospital. There's nothing serious going on, and I'll be released in a few days.
I was driving home from school when the road I was about to cross became blocked. I was unaware of the treason, but without more consideration, I shifted my course to another road. As I was walking, a car approached from the opposite direction and struck me, albeit only lightly. The crash knocked me to the ground and brought the automobile to a halt. It appears that the car was driven by a man who was a little erratic.
It appears that the car was driven by a somewhat inebriated man. Fortunately, I was only slightly injured, with cuts to my head and arms.The doctors said I didn't have any significant injuries, but I still had to be cautious when doing heavy work. I'm improving rapidly, and if all goes well, I should be out in no time.
Wishing you luck on your forthcoming exam and hoping to see you soon.
Your friend
(your name)