Chomsky defines “competence” as the ideal user’s k（）of the rules of his language.

Phonology

The discipline that studies the rules governing the formation of words into permissible sentences in languages is called s（）

Sociolinguistics is the study of language in relation to society.

Language is p（）in that it makes possible the construction and interpretation of new signals by its users. In other words, they can produce and understand an infinitely large number of sentences which they have never heard before.

Phonetics is different from phonology in that the latter studies the combinations of the sounds to convey meaning in communication.

Both semantics and pragmatics study meanings.

Langue refers to the a（）linguistic system shared by all the members of a speech community while the parole is the concrete use of the conventions and application of the rules.

Social changes can often bring about language changes.

Findings in linguistic studies can often be applied to the settlement of some practical problems. The study of such applications is generally known as a（）linguistics.