Thank you, teacher, for your feedback. Based on the classes you've taught her, could you please give a reasonable assessment of her? If we book 4 classes a week, how long will it take her to finish PU4? Also, regarding preparing for the KET exam, what else do we need to prepare? Do you have any recommended items? And when is the most appropriate time to register for the exam? Please reply. Thank you! We hope to keep learning English with you and make continuous progress!