First of all, you need to listen carefully in class and don't ask for leave if you have the conditions. Listen carefully in class and understand what the key points are. The teacher will tell us clearly what is the point and what is not. What exam will you take? There are many responsible teachers who will tell us some knowledge points of postgraduate entrance examination in class, so it is very important to listen carefully in class. For some students with good memory, listening carefully in class is enough for them to remember that they will not fail in key exams.
Then you need to find a like-minded partner to study with after class. For some students who have high demands on themselves, they need to work very hard to get a higher position if they want to get good grades. At this time, we can't just listen carefully in class, but also review after class and preview in advance. In the process of reviewing, we will find that we still have many questions that we can't do. Remember these questions and get his answers in all the ways you can think of. This process is difficult to persist without company. You can find several people to study together and supervise each other, so that you can have the motivation to persist.
Finally, review before the exam. Reviewing before the exam is also a very important process. Without this process, no matter how well you did before, your exam results may not be satisfactory. Therefore, when reviewing before the exam, you need to make a timetable for yourself, think about what to review every day, and don't let your procrastination attack.
The above is my own experience that I can't pass the exam. We'd better have our own goals for some things. These are the ways for me not to fail the exam. There is no opportunistic method, we can only rely on our own efforts.