You are employed full-time and also doing a part time evening course. You are not able to continue the course.
  Write a letter to the course lecturer. In the letter
  - explain why you cannot continue the course?
  - describe the situation?
  - say what you will be doing.
  You do NOT need to write your own address. Begin your letter as follows: Dear...
  Model Answer
  Dear Dr. Jones,
  I am writing to inform you that I no longer have a possibility to attend your evening lectures on treating emergencies.
  As I told you earlier, I received a position of a nurse at the Thompson Hospital. My shift ends at 5 pm and since I have got a lot of overtime job recently, I found myself unable to be on time at your lectures, which start at 5.30 pm. This disappoints me a lot since I value and respect your course and your experience.
  I would be grateful if you could consider letting me to study your course myself. Because of my job is closely related to the accidents treatment, I feel able to learn every point of the course in practice. In addition, I have already read almost every book you recommended as the supplementary reading for your lectures.
  I hope to get your approval on this matter soon. I am looking forward to receiving your response.
  Sincerely yours,
  Nadia Afsana