The verb "had" by itself is an active verb, the past tense for to have. "Had" by itself is never a linking verb, but with past participles of other verbs, both action and linking, it forms a past perfect tense of the other verb.
began is an action verb, not a linking verb.
It is an action verb.
action, it is the past tense of the verb surround.
Was is a linking verb.
action and linking
Linking verb
It's a linking verb Action verb express a action of some kind. Linking verb express some state of being
it is a linking verb
linking or action verb is follows by a subject.
It's a linking verb Action verb express a action of some kind. Linking verb express some state of being
"Entered" can function as both a action verb and a linking verb, depending on how it is used in a sentence. As an action verb, it indicates physical motion or movement. As a linking verb, it connects the subject to a subject complement that renames or describes it.
The verb taste can be an action verb or a linking verb; for example: Action verb: They let me taste the fudge to see which I liked best. Linking verb: This fudge tastes good.