Choose your favorite topic to study first, and don't care too much about the homework assigned by the teacher, because if you are forced to study by others, you will hate it even if you like it again, and then do some favorite topics yourself (a bit challenging). It doesn't matter if you do extension, don't care about others, you will have a sense of victory and satisfaction when you do it. In this way, you will continue to do more problems, so that you can study happily.