I think if you are always good at math and understand all the key points, then your mother will force you to brush the questions, so you can sit down and have a good chat with your mother.

Don't waste too much time on brushing questions, it's also good to do something that interests you. It is necessary for you to communicate with your mother. In fact, your mother is also thinking of you, and his starting point is still good. So the two men focused on communication. Give your opinion, and I'm sure your mother will understand you, too.