The word missing can be an adjective and a verb. The adjective form describes something or someone that cannot be located. The verb form is the present participle of the verb miss.
It is an action verb.
began is an action verb, not a linking verb.
action verb because you did this action (sent)
what follows a linking or action verb
An action verb
action verb
Action verb
It is an action verb.
Action verb
The verb stay is an action verb.
Yes,waiting is a action verb