The answer to your question would be the last answer, starting with "Darkness, greed, and corruption" Charles Dickens creates this sense of darkness by the words he uses to describe the scene, such as "foul, cesspools, bad repute".
Really simple and straight to the point:)
Hello (mr/mrs__),
I wanted to thank you for arranging the school trip. I really appreciate it and thought I should thank you. Have a good day!
(ur name)
Jim chose Bill and Terry for his team Sandra chose Gina and Mary Luke chose Audrey and Reggie.
MLA style : Rowling, J. K. Harry Potter and the Sorcerer's Stone. New York: Scholastic, 2001. Print.
hope this helps :)