The famous spy story books about the hero James Bond(007) are written by ______.

单项选择题______ describes in detail a communist society.

单项选择题The most obvious and rapid change in the development of a language takes place in the area of

单项选择题The official residence of the ______ is at number 10 Downing Street, London.

单项选择题The word aconic is ______.