Of course it works. The wrong questions arranged by senior one and senior two are generally relatively simple. And it's a special series. Wait until the third year of high school to review. The wrong questions sorted out are all comprehensive questions. If you don't understand these questions, take out the simple wrong questions in Grade One and Grade Two and do them again. At this time, you will feel that your thoughts will be clearer. It is helpful for the big questions in the review of senior three in the future. Yes, this is especially important in mathematics. I hope my words can help you.