A．William Wordsworth.B．George Elliot.C．George G. Byron.……

单项选择题________ refers to the study of the internal structure of words and the rules of word formation.

单项选择题What essentially distinguishes semantics and pragmatics is the notion of______.

单项选择题The Prime Minister in Britain is head of______.

单项选择题The word tail once referred to the the tail of a horse , but now it is used to mean the tail of any animal . This is an example of________.