yes .it a linking verb .
Seem is a verb.
An Adverb. Reason it ends in '-ly'. e.g. He ran breathlessly to the bus stop.
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.
Leg may be a noun or a verb (with "it").
A verb.
It is an adverb.
Advanced may be a verb, a participle or an adjective.
"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.
An active verb is required; any other part of speech may be present.
The part of speech for this particular word is a noun.