He sets fire to the building.

He is setting on fire the old documents.

He sets on fire the old documents.

He was setting fire to the building.

He is hanging fire on making a decision.

We have regular fire drills at our office to ensure everyone knows what to do in case of an emergency.

He was embarrassed when someone called him a fire crotch.

He was embarrassed when his friends called him a fire-crotch.

The fire salamander is a brightly colored amphibian found in Europe.

Fire salamanders are fascinating creatures.