This year's Minhang mathematical model is relatively simple, and the whole is not difficult. If you ask 1 to 1, it seems that your math test is not very satisfactory. Junior high school mathematics is still a basic part. I suggest you list all the wrong questions in the papers and exercises you did in the last semester of Grade Three, sort out a book of wrong questions, and then combine 1 with 1, so that the effect will be better.
If you just want the teacher to make it up for you, it's still a bit unrealistic. At this stage, the key to improving your grades is your attitude, followed by finding a formal and suitable cram school, such as a targeted sprint in the last four and a half months.