At last, he stopped by the wall in a front corner of the room, and tapped softly.

Lucinda tapped softly, then opened the door and looked in on him.

He moved toward a door, stopped there and tapped softly on the door.

He tapped softly at her door but got no answer.

I tapped softly on the door and a quiet voice from the other side said to come in.

He moved around a corner of a passage and tapped softly at the first door on the left.

I softly tapped for his attention and told him to go to the cellar door.

And then the son was tapping softly on the door again.

Someone tapped softly at the door by which the ma-jordomo had left.

He tapped softly on the door of No. 7.