It is best to practice systematically. A systematic training will last for seven days. Then you'd better practice more before the exam, and the effect will be good. Also, if you can practice repeatedly until the interview, you should pay attention to the connection of his teaching knowledge when choosing a training institution. Also, the students in the best institutions have higher quality, and then you can exercise your ability to improve and comprehensively evaluate an institution. I hope you can find the right one. I wish you success in the exam.