Dear Sir or Madam, I am writing to ask for more information about your English course. I saw your advertisement and I am very interested in this course because I want to improve my English. First, can you tell me what students learn in this course? I want to know if the course helps with speaking and listening. Also, how many students are there in one class? Next, I would like to know about the teachers. Are they friendly and experienced? In addition, please tell me about the time and the length of the course. Are there classes in the evening or at the weekend? Finally, how much is the course fee? Do you have any discount for students? I hope to receive your reply soon. Yours faithfully, Nguyen Yen Nhi