I slipped under the counter and knocked politely on the door frame.

She knocked politely nonetheless, and waited five or six seconds before entering.

They stopped at a side door, where Willis knocked politely before entering.

I hope they knock politely instead of busting in my door.

He knocked politely at the heavy door but entered without waiting for an acknowledgment.

He didn't go over the garden wall this time, but knocked politely at the front door.

I politely knocked at the door, and, after a minute or so, Jill opened it.

He knocked politely on Stuart's door, and called out his name.

Nowadays I hear they don't politely knock though, and usually come when you're sleeping anyways.

Random stepped forward and knocked politely on the door.