First of all, you should calm down, don't be too nervous, don't put too much pressure on yourself, and then listen to the teacher carefully step by step. There are still several rounds of review in senior three, and they will all be improved later. Mathematics in senior two has just passed, and there will be great improvement in senior three. Because the exam in senior two is a chapter exam, the exam in senior three is systematic. Don't worry too much anyway. Just believe in yourself.