"Keep your head down the next few weeks," Bill said.

He kept his head down to avoid eye contact, watching her legs approach, waiting for the turn that would mark the end of the count.

Some of them shot at the enemy and made him keep his head down while others actually moved forward.

Shouldn't I stop trying to do some science and keep my head down?

She does keep her head down when she's in town.

And keep your head down until I say we're clear.

"Are you sure," I said, "that you're really supposed to keep your head down?"

How will he be able to keep his head down?

He walked on, keeping his head down to avoid eye contact.

She would have just kept her head down and stepped on the gas.