No, harmless is an adjective.
Example: My dog is harmless.
This sentence means that my dog won't bite or attack. He's friendly.
No, it is an adjective.
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
It is an action verb.
Action verb
Action verb
action verb
An action verb
The verb stay is an action verb.
Yes,waiting is a action verb