Is it a sentence?

Walking down the street.

• sentence

• fragment

The boy was wandering through the woods.

• fragment

• sentence

The wild horse.

• fragment

• sentence

The cutest baby in the whole world.

• fragment

• sentence

People were talking about the upcoming holiday.

• fragment

• sentence

Giving me money for the bike.

• fragment

• sentence

He bought everyone an ice-cream treat.

• fragment

• sentence

The girl on the fence wearing a purple sweater.

• fragment

• sentence

The kittens were meowing for their mother.

• fragment

• sentence

Did you lock the door before going outside?

• fragment

• sentence