Yes, "continue" is a verb. It is an action word that expresses the act of persisting or carrying on with an activity or process without interruption.
It is an action verb.
The verb for persistence is "persist." It means to continue firmly or obstinately in an opinion or course of action despite difficulty or opposition.
The verb of continuation is "continue."
Yes, "keep" is a verb. It is often used to indicate maintaining possession or control over something, or to continue doing an action.
began is an action verb, not a linking verb.
The verb for continuity is continue. As in "to continue with something".
"Sent" is an action verb. It shows an action, such as "she sent an email."
what follows a linking or action verb
It is an action verb.
action verb
Action verb