Free Writing

Tomorrow,we have a big exam in the math class,so I try to prepare for it. I thank vary afraid. Maybe I will be frank. I hope teacher can give me a chance to improve. I promise I will do my best to do better on calculus. But it is too late to regret about this, I should do my best to get the grades as possible as I can..therefore I go to Internet to search the teaching movie.but the lengh of the movie are six hours.I think I can not sleep until exam was over.But if I do not sleep I wonder can I have energy to write the exam.When the exam is finish,I think I should sleep.