Hello, you don't know mathematics at all in the second day of junior high school, which shows that your basic knowledge is poor. You should hurry up and give yourself a tutorial. You can find yourself a counseling institution, whether it is one-on-one counseling or remedial classes, which can help you.

It is best to make plans for further study in advance. There are still many plans for low-scoring students to enter ideal undergraduate colleges. Take precautions, so that you will get twice the result with half the effort when you go to further study.