You mean Bates 2 and Peter, right? BETS and Cambridge are slightly different in Chinese and English. Because the BETS topic is designed in consideration of China people's acceptance, it may be simpler than Cambridge Band 5, but it is not too far. At present, Beijing has combined the textbooks of BETS and Sword into one. Learning one note can test two pets and one note. Personally, I think that more professional schools have learning and thinking (don't choose students with poor foundation, there are too many students attending classes), and North Wesson education is also good (this school is famous for its Sany oral English, followed by BETS, and although it has been established for more than three years, its reputation is slightly worse than that of learning and thinking, but the teachers of North Wesson education are very good, and the TOEFL IELTS in New Oriental is good, and the certificate training in Xiaoshengchu seems to be ignored. You can refer to several schools and choose according to your own needs.