We can classify morphemes into（）.

We can classify morphemes into（）.
A.bound morphemes and free morphemes
B.lexical morphemes and grammatical morphemes
C.derivational morphemes and inflectional morphemes
D.adjective morphemes and numeral morphemes
正确答案：bound morphemes and free morphemes；lexical morphemes and grammatical morphemes；derivational morphemes and inflectional morphemes