Changes in a language are changes in the grammar of the speakers of the language. This means that phonemes, ______, words and grammatical rules may be borrowed, added, lost or altered.
A、phrases
B、sentences
C、morphemes
D、utterances
【正确答案】：C
【题目解析】：Changes in a language are changes in the grammar of the speakers of the language.This means that phonemes, morphemes, words and grammatical rules may be borrowed, added, lost or altered.