I'd have to say Slowly and Cautiously.
Ivan does not say anything because he cannot speak.
After Rainsford comes to Zaroff's door, Ivan answers with a gun pointed at Rainsford. Rainsford tries to talk to Ivan, but he does not respond. When Zaroff comes to meet them he explains that even though Ivan is incredibly strong, he is "deaf and dumb" which means he is unable to hear or speak.
Omg i remember reading this story! A fav!
Ok so:
Four sound are
planes bombing (unpleasant)
Marching of the nazis (unpleasant)
Children playing (pleasant)
Music? I forgot what the instrument was but they heard an instrument (pleasant)
In Chapter 7 Moonshadow went to visit Mrs. Whitlaw to educate her on demons. Moonshadow was impressed that Mrs. Whitlaw seemed to be interested in other people. He explained about the dragons and was impressed with the knowledge he possessed and she could see his point of view. After his visit, Moonshadow came home thinking that demons weren't that bad.