Verb phrases follow a definite order and change form. Find the verb phrases and tell what kind of verbs they are. I can understand your concern. The rooms cannot be held any longer. I haven't seen him for an hour.
Verbs never change form.
A verb is never just one word. Verb phrases keep a definite order. There are twenty-three helping verbs. Helping verbs cannot be the main verb. Helping verbs can be action verbs.