They look unhappy because of the thing George has in his hand.

I want to know whether or not he looks unhappy.

Then he sat down on the ground and looked unhappy.

He came back talking to himself, looking very unhappy indeed.

There was only one who did not look at all unhappy.

The security chief looked even more unhappy, if that was possible.

They looked unhappy, but there wasn't much I could do about it.

The guard looked very unhappy, which didn't mean she was wrong.

When the woman got off, she looked unhappy and turned to a young man standing nearby.

He looked very unhappy about this turn of the conversation.