Hello, there are TOEFL guarantee classes, but you can't guarantee to pass them once. There are too many variables, such as teachers, oneself, environment, state, examination questions and so on. These all affect the final result. The purpose of participating in the training office is to let yourself receive a more systematic and focused review, save energy and maximize the review effect as much as possible. Landing can guarantee that you will pass, but you can't guarantee that you will pass once. Therefore, it still depends on personal ability. Taking part in the training does not mean buying foolproof insurance. In short, keep a good attitude, persevere, negotiate frankly and do your best. I believe I can succeed.