Grandpa goes for a walk in the park every day.

Geez, are you late again?

He went to bed early because he was tired.

He decided to become a doctor.

There was a deep mark left on his face.

His tracks were left in the snow.

His footprints were left on the sandy beach.

He has two children with his second wife.

There's no turning back, we can only move forward.

He turned back to go and get his forgotten item.