She waited, then knocked a little more firmly.

Jack jumped out, devoured two steps at a time on the stairway to Gina's front door, and then knocked firmly.

He walked the thirty feet, knocked firmly on the door, and waited.

I made my way to the Violet Chamber and knocked firmly.

She walked right up to the door and knocked firmly.

Instead, he lifted his hand and knocked firmly against the smooth panel.

He stepped forward and knocked firmly on the door.

At first there was no response, and Deanna knocked firmly.

'They look nice enough to me,' said Brough, attempting to get his hand on the nearest but having it knocked firmly away.

Marching across the gravel, she knocked firmly on the vast front door.