But you also have this situation, and then I'll teach you a few small ways to improve your overall score.
First, you said that your physics is ok, so you should spend more time on physics in the next semester of senior three to improve your physics grades, because the next semester of senior three is mainly to improve the dominant disciplines and retain the weak ones.
Second, at present, your chemistry and biology are not very good, or even very poor. This is very unfavorable for the college entrance examination. In this regard, my suggestion is to return to textbooks and lay a good foundation of my knowledge. This means that you must read the textbook and then do the exercises. For example, you read the first chapter of compulsory biology today, so you did your homework about it today, and so did chemistry.
If this is your situation, I suggest that you don't brush heald paper for the time being, because the knowledge points of heald paper are all integrated, and what you do will not only have no effect, but also lead to your loss of confidence. So what you have to do now is to review the knowledge points, bit by bit, and it may be better for you to do the comprehensive paper again next semester in senior three. Finally, I wish you a smooth college entrance examination.