When you get into Population, keep your ear to the ground, ask around.

I see it said that leaders should keep their ears to the ground.

You have to keep your ear to the ground to find out what's going on in this place.

As they went through the wire, she kept her eyes to the ground.

He has an answer for everything and keeps his ear to the ground.

So he'd been keeping his ear to the ground, at least.

We stay in the air to keep our ear to the ground.

He always kept one ear to the ground, and little escaped him.

And smart enough to keep his ear to the ground.

So for the last few months, he had kept his ear to the ground.