90%, that's impossible. Some training institutions have a pass rate of 30% and 40%. These training courses generally don't cheat, because they know the true pass rate and are honest. I signed up for a man's special training class in Baoyou. You can learn about it. There is a special study group with real questions and analysis, which will customize your study plan and urge you to study. I think this is more responsible and will supervise your study, but you still need to find a suitable training class to study better.