auxiliary verbs...these are always combined with a regular verb, and modify the meaning to add "permission" or "ability" or "possibility", etc.
(original answer) "May" and "can" are auxiliary verbs lacking the present indicative form ( as shown by the absence of the third person marker in -s).
The only necessary part of speech in a predicate is a verb, but a complete predicate may include any other part of speech, with the possible exception of an interjection.
adverbial clause
"Hallooh" is not a recognized English word, so it does not have an official part of speech. It may be a misspelling or variation of another word.
A verb.
yes .it a linking verb .
Leg may be a noun or a verb (with "it").
Advanced may be a verb, a participle or an adjective.
It is an adverb.
"Stroobly" is not a recognized English word, so it does not have an associated part of speech. It may be a made-up or invented word with no defined grammatical classification.
'Disdain' may be either a transitive verb or a noun.
Advanced may be a verb, a participle or an adjective.
An active verb is required; any other part of speech may be present.