Accidence
That frightening experience happened to me 4 months ago on the day I had to take the Math final exam. I still remembered that that day was a sunny, beautiful day. The sky was so blue and clear without any cloud ,and the sunshines were dancing on the top of the trees. I was driving to school for the Math final test , the most important test in this course. Drawing the car's windows down, I took a deep, long breath.