Your trust can be torn apart any minute. Another theme is face your problems, not run away from them. Willa is a strong going girl who tries to ignore her problems, not face them. The conflict that she faces is that she is held captive by Reed, the Hollywood Killer, and almost loses her life.
I would say the theme is literary. The kid who doesn't study gets a bad grade while the one who did is the first one finished. But it isn't stated explicitly (as a direct or stated theme would be). I hope this helps.
Its B the teacher appeared angry when Dave forgot his homework.
The word congregation is an example of a collective noun. C.