Respuesta :
Answer:
a singular verb is needed when the parts of the compound subject as thought of as one item with the sentence of the compound.
Noun I think
stem vowel - a vowel that ends a stem and precedes an inflection. thematic vowel. vowel, vowel sound - a speech sound made with the vocal tract open.
stem vowel - a vowel that ends a stem and precedes an inflection. thematic vowel. vowel, vowel sound - a speech sound made with the vocal tract open.