The following answers are at 'band 9' level. Which words and phrases help my answers to get such a high score?
1. What do you think makes a good lesson?
I think a good lesson is one that is interesting and engaging. By 'engaging' I mean that the students should feel involved in the lesson; they should feel that they are learning something new that is relevant to them. In my opinion, a lot depends on how the teacher delivers the content of the lesson in a way that students like. My favourite teacher at university used to involve the students by making us teach some of the lessons ourselves.
2. Do you think it's better to have a teacher or to teach yourself?
Well, there's no substitute for a good teacher. I think you can teach yourself, but you can learn a lot more quickly with the guidance of a teacher. For example, when learning a language, you really need someone to correct your mistakes; you can get the grammar and vocabulary from books, but books can't tell you where you're going wrong.
3. Do you think the traditional classroom will disappear in the future?
I don't think it will disappear, but it might become less common. I think more people will study independently, using different technologies rather than sitting in a classroom. Maybe students will attend a lesson just once a week, and spend the rest of their time following online courses or watching video lessons.