I will show you." He took an old envelope out of his pocket, and wrote his name on it, handing it to the jury. 
He happened to have an old envelope and a pen in one of his pockets.
He asked for a piece of paper and a pen, so as to prove his point.
The woman is driving down the highway
A group of people sit on a sidewalk.
The secret method is pacing yourself.
She was unaware of the battle.
You do have a point there.
A boy is flying a plane.