He couldn't spot a single face that looked old enough to vote.
But not a single face could be seen among the crowd making its way to the front door.
I stood watching for a while, not knowing a single face.
"A restaurant with 200 people, you don't see a single black face."
We tried to show the outside world a single face.
This city and nation has one hope: turn a single face toward the enemy.
"You can walk down the street and not see another single white face for 10 minutes," he said.
He did not see a single friendly face in the crowd.
Without the color, all the angels had one single face.
A single, enormous face formed on the wall immediately in front of her.