The teacher saw that I did not was reading the book and when I told her to stop saying the words repeatdly, she just said that this is callan. I think that if your student is having a doubt, even if it is a skilled student, you should ask why he is not reading a book together. I do not give 0 stars because I saw that I should study more and have the book in the class and maybe talking to people is new for this teacher.