He sat lost in thought, tapping his fingers on the table.

He tapped his fingers on the glass, then turned to look at the three men.

He tapped his fingers on the box and made for the door.

He tapped a finger to the points of three others.

He tapped a finger against the side of the cup.

The general tapped a finger on the table as he thought it over.

Finally, she stopped and tapped a finger in the open book.

I tap my finger on the bar, trying to turn away from Mark.

He tapped his fingers on the desk, already deep in thought.

She tapped her fingers across the top of the desk, thinking.