Different people have different views on the method of sorting out the wrong questions, but I think it is very important to sort out the wrong questions, because one can make progress only by ensuring that the wrong questions are no longer wrong. Therefore, before sorting out the wrong questions, one should maintain a correct attitude, and don't take the wrong questions as homework to cope with the teacher's inspection, so that you not only waste time, but also get nothing. I can answer your question like this. You don't need to sort out every wrong question. For the same question type, you only need to choose a classic to sort it out. For the copied questions you ask, my personal opinion is to copy the original questions, because when you copy the questions, you will deepen your understanding and memory of the questions, which will be very helpful for your future exams. Finally, I will tell you the format of sorting out the wrong questions. The first is the original question. It is best to write out the source of the problem, such as from the second math book and so on. Then I don't write the answer, but also write the analysis of the problem. Finally, I'll write the answer, so that you won't see the answer at a glance the next time you look at the question, so your thinking of doing the problem is limited. That's all I want to say. Study hard.