单项选择题In some speech community, two languages are used side by side with each having a different role to play, this is ______.
单项选择题Which of the following statements would the writer probably Not support
单项选择题In Jefferson’s opinion, what could prevent tyranny and preserve freedom
单项选择题Etiquette as an art of gracious living is quoted as a feature of which country
单项选择题According to the writer which of the following is put of chivalry A knight should ______.