Wrong questions need to be sorted out, which is a problem in the process of doing homework at ordinary times and is valuable to you.
It is suggested that when sorting out the wrong questions, write the answers on the opposite side of them. In short, don't see it at a glance, so you can use it when you come back to review. Do it first when reviewing to see if there are any problems. If there is, leave it alone. If there are any, understand them again and mark them so that you can review them next time.