Major lexical categories are ____categories in the sense that new words are constantly added.
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"Teacher-student" is a _____ compound.
A lexeme can be understood as a family of words that differ only in their grammatical ____.
Nouns, verbs and adjectives are____words rather than function words.
As a result of ____, the negative morpheme in imperfect and impossible is “im-” rather than “in-”.