The guard looked at him as if he'd lost his mind.

A guard came over and looked at him, but didn't do anything.

The guard looked back at the other cars in line.

The other guards looked as if they had wanted to ask the same question.

The guard looked in, saw nothing of interest, went back to his post.

The two guards looked at one another, but did not move.

See then whether the civil guard looks the other way!

The guard looked as though he wanted to believe them, but was afraid to.

The guards didn't look at him quite the same way as he passed.

The guard looked over his shoulder and out across the road.