Buckingham Palace is______ 's present London home.

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In Jefferson’s opinion, what could prevent tyranny and preserve freedom

单项选择题According to the writer which of the following is put of chivalry A knight should______

单项选择题Why did Annan meet the seven top pharmaceutical companies

单项选择题Etiquette as an art of gracious living is quoted as a feature of which country