what is language for?

what is language for? what is approaching language what is language 英语翻译What is language for?Some people seem to think it's for what is the primary medium for all language,is it writing? what is official language of the ICO what language is s______ in this country? What is the language of the USA? what is a good language teacher? What language is most spoken in Guangdong? What is the language (speak) in Australia? What language is Betty learning是意思