Don't cross the street without a grown-up. Every home needs a smoke alarm. Hold on to handrails. Just remember to ride in the back seat of the car. Never eat anything without asking a grown-up.
Poisons are dangerous.
Quickly leave the house when the alarm sounds. Ride your bike with a grown-up. Stop, drop, roll if your clothes catch fire. Very small things can be a choking hazard. Wear a PFD when on a boat.