He paused in the doorway and looked back at me.

He paused in the doorway and looked at her for a long moment.

He paused in the doorway a moment, trying to make a decision.

But he paused in the doorway, his back to her.

The older man paused in the doorway and looked around.

The man paused in the doorway, his head turned to one side.

The Professor paused in the doorway to look at her.

She paused for a moment in the doorway, looking at him.

They paused in the doorway, and not for effect, but because of it.

On his way out of the room, he paused in the doorway.