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单项选择题

A.phonemesB.morphemesC.allophonesD.phonesWhat the eleme……

What the element ‘-es’ indicates is third person singular, present tense, the element ‘-ed’ past tense, and ‘-ing’ progressive aspect. Since they are the smallest unit of language and meaningful, they are also().

A.phonemes
B.morphemes
C.allophones
D.phones