a) Hugh Jackman is different because he was not a teacher, but a teaching assistant.
b)
1) J.K. Rowling was a teacher in Portugal, Sylvester Stallone was a teacher in Switzerland
2) Sylvester Stallone
3) Hugh Jackman
4) Brian May
5) Stephen King
c
a language institute - институт иностранных языков
horror stories - рассказы/повести/романы ужасов ("ужастики")
rock bands - рок-группы
drama school - театральное училище/школа
a teaching assistant - помощник учителя