She decided to act bravely in the face of danger.
He will act as the moderator in today’s debate.
You need to act quickly before the opportunity is gone.
They are learning how to act in their drama class.
She can act both comedy and tragedy effectively.
He was caught trying to act like someone he is not.
Please act your age and stop throwing tantrums.
They will act on the advice given by the consultant.
Can you act out the scene one more time?
We must act now to prevent further environmental damage.