The fire doors of this building must always be kept closed.

On cold days, I turn on the heating to warm the room.

Beautiful peonies are blooming in my garden.

He defeated the enemy with a metal rod.

He took a big risk to start a new business.

He embarked on a new adventure.

He ruined his health because of his gluttony.

He overate due to stress.

Last night, a large-scale riot broke out in the city.

He dissected a frog in his biology class.