Buckingham Palace is______ 's present London home.

单项选择题The largest and smallest states of the United States are______.

单项选择题Japanese attacked the Pearl Harbor in______.

单项选择题Which of the following is NOT an element of the code of etiquette

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One characteristic of the rich classes of a declining society is their tendency to______