Mid-term exam

We had finished mid-term exam, but I didn't content my own grade. Although the score is not bad, I still think that I can do it better.May be I am not study hard enough, or I can do more great job on my course.I know we students are easy to make the kind of mistake-always regret that why we do not do our best on studying. Sometimes, you want to achieve one thing that you need to make determination on it. Therefore, you will succeed and reach your goal someday.