1、When did Raoul de Chagny forst meet Christine?
答案：Four years ago.
2、Which is the ghost's box in the Opera House?
答案：Box 5.
3、Who found Joseph Buquet's dead body?
答案：Some stage workers.
4、How much money did the ghost want from the directors?
答案：20,000 francs a month.
5、Who was the best singer in Paris at the beginning of the story?
答案：La Carlotta.
