Now it has passed level 4, concentrate on breaking level 6! I suggest you take the basic course of CET-6 first. The basic course will talk about some basic topics in real questions and lay a good foundation for you first. Prepare your own CET-6 vocabulary after class! ! Then, the teacher will focus on the test sites, key points and difficulties, as well as practical test-taking skills!
By the way, there will be a model exam before the exam, simulating the exam environment, or the papers carefully prepared by teachers, which is very useful!