题目内容

All words may be said to contain a root ____.

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____affixes are added to an existing form to create words.

____morphemes are those that cannot be used independently but have to be combined with other morphemes, either free or bound, to form a word.

A ____is added to the end of stems to modify the meaning of the original word and it may case change its part of speech.

Back-formation is a productive way of word-formation.

A. 对
B. 错