An auxiliary verb
um probably kindly (this is adwerb); verb should be to fondle
The verb phrasal should not be used in formal business writing.
A linking verb.
A linking verb
It is an irregular verb.
It is no kind of preposition. It is a conditional past perfect verb form.
The verb appear can be a linking verb or an action verb.
should have been together form a verb phrase but should and have in this example are helping verbs that help the linking verb been, or should have been together can be all helping verbs like when you use it like this: He should have been running this morning but he couldn't get out of bed early enough.
the infinative
It is a regular verb
Is becomes a verb
a regular verb.