That's what science is. You can read books, but you can't do problems. The reason is lack of practice. Just do more questions and think more. Mark the wrong questions when you do it, and mark the ones you can't do. Be sure to read these marked questions over and over again until you fully understand them. Understand what the purpose of the question is. The purpose of doing the problem is not to show the teacher, nor to make yourself comfortable. It's about finding out what you don't know and what you don't know enough. As for why we should do similar problems over and over again, the reason is to reach a certain number without showing off to others. It is to increase proficiency. After all, there is little time for math in the college entrance examination. If you spend half an hour without a question, you will definitely not finish it, and you will definitely not get high marks in the exam. I will use what I said in math study. If you understand the wrong questions you have done and the questions you can't do, you will definitely improve. Don't try to figure out quantity, but pay attention to quality. After writing a book, the results are all done by copying the answers, which is definitely different from just doing a few questions by yourself. Study with perseverance and patience. As long as you are making progress, don't worry. The more anxious you are, the worse you will learn.

If you think the teacher is making rapid progress, you don't have to review with the teacher, but you must make a suitable plan for yourself and strictly implement it. The timing depends on your own situation. You can try to understand it. What others have told you must never be applied. 1 15 can definitely be realized.