I just don't study hard, attend classes and copy my homework. I have never passed the physics exam. In the last two months of last semester, I began to work hard, doing problems every day, and the final exam improved by more than 20 points. Although it is not very good, I am satisfied, because if I continue to work hard, my grades will be improved.

So, students, don't just talk and do nothing. As long as you work hard, your grades will naturally go up. It may be slow, but it will get better and better.