You just happened to look up at the wrong time.

She looked up at him as if he had done something wrong.

They would look up at him when he came in.

She looked up at him for a moment before beginning her story.

As he looked up at them, the light behind him died.

She did not have to look up at the face.

He looked up and down the street, then back at the money.

Something went out of her voice as she looked up at him.

I could turn my head and look up at them.

Turn over and look up at me, if you will?