dear liming;
i'm sorry to hear about this,i really understand you,and i know you are worry about your study.i hope i could help you.there are some advice
at first,i think you should listen your class more carefully ,and take some notes ,it can help you to review.next i think you should talk with your teacher,she can help you and give some suggestions.and if you have some questions when you do your homework,you can ask help from your classmate,i think they will really happy to help you,and do not worry about make mistakes ,you know everyone makes mistakes.i hope i can help you
