First of all, find out the high school textbooks and memorize all the texts, preferably (although I know no one will do that).
Second, don't skip classes in college English. College English textbooks are far more affordable than new concepts!
Third, don't "casually" recite words, don't "casually" make a single choice, which is useless and inefficient; If English is too poor, start with reading and use reading to drive words (the basic vocabulary is only about 5000, which is the requirement of Band 4). Even if you read a sentence or two every day. As for whether you have improved, you can use the future college entrance examination questions to test your ability!
2004 college entrance examination 1 16, 2005 12 1, 2006 129. I will take the college entrance examination every year!