"Green action groups will know which doors to knock on."

At least tell me which door to knock on.

"She tell you who's in which room so you know what door to knock on?"

And you know somebody is getting their door knocked on in China.

They reached the door of the music room and the captain knocked.

On the second floor, we stopped before a heavy wooden door and the guard knocked upon it.

They got their doors knocked on and were taken away.

The super popped the door open before I even knocked.

If the front door to your home is suddenly knocking against the frame, it could be the wind.

"No one will have their door knocked on by employees of the reassessment company asking to come inside."