(B)adverb
(C)adjective
Helping verbs are verbs that help the main verb in a sentence by extending its meaning. They can also add detail to how time is conveyed in a sentence. As a result, helping verbs are used to create the most complicated verb tenses in English: the progressive and the perfect aspects.
A. Bud asks for their help.
B. They knew him before his mother died.
C. They don't want Bud to go hungry.
D. They are wealthy and charitable.
It is C trust me I just took the test!!!!