多选题In normal situations, ____ speakers tend to use more prestigious forms than their ____ counterparts with the same social background. ( )简答题The _______ is a personal dialect of an individual speaker that combines elements regarding regional, social, gender, and age variations. ____简答题A _______ is a special language variety that mixes or blends languages and it is used by people who speak different languages for restricted purposes such as trading. ____多选题The most distinguishable linguistic feature of a regional dialect is its grammar. （ ）简答题Language varies as its function varies; it differs in different situations. The type of language which is selected as appropriate to a type of situation is a ______. ____多选题Language use varies from one speech community to another, from one regional group to another, from one social group to another, and even from one individual to another. （ ）多选题Two speakers of the same language or dialect use their language or dialect in the same way. （ ）