Dear Sir or Madam,

I am writing to enquire about the English course advertised on your website. I am very interested in improving my English skills, especially speaking and listening. First, I would like to know more about the course schedule. How many lessons are there each week and how long does each lesson last? In addition, could you please tell me the starting date of the next course? I would also appreciate it if you could provide information about the tuition fees and any extra costs for materials. Furthermore, I wonder whether the classes are taught by native speakers and how many students there are in each class. Finally, it would be helpful to know if there is a placement test before the course begins. I look forward to receiving your reply.

Yours faithfully,

Khánh