He fumbled for the key in the darkness.

My keys are inside the house.

I'm extremely hungry, I can eat anything.

I'm starving, so I want to eat something.

He dedicates all his efforts to God.

He studied classical literature and understood the meaning of the old word 'kudaru'.

He was fumbling for the way in the darkness.

He is groping his way through the new project.

He speaks Japanese fluently as if his tongue is rolling.

The Earth is revolving around the Sun.