Answer:
Billy and his friends were throwing the football around. Active voice.
As Molly was carrying the tray, it started to wobble. Active voice.
Karen is always told not to go to her room by her parents. Passive voice.
Step-by-step explanation:
Active voice is a form or set of forms of a verb in which the subject is typically the person or thing performing the action and which can take a direct object.
Passive voice is a form or set of forms of a verb in which the subject undergoes the action of the verb. With the passive voice, the subject is acted upon by some other performer of the verb.