This story about a frightening incident is narrated in a humorous way. What makes it humorous? (Think of the contrasts it presents between dreams and reality. Some of them are listed below.)
1. (i) The kind of person the doctor is (money, possessions)
(ii) The kind of person he wants to be (appearance, ambition) 
2.(i) The person he wants to marry
(ii) The person he actually marries
3.(i) His thoughts when he looks into the mirror
(ii) His thoughts when the snake is coiled around his arm
Write short paragraphs on each of these to get your answer.