He turned to her, an odd look on his face.

A student going the other way gave him an odd look.

A moment later my boss2 got an odd look on his face.

He gave her one of his odd looks in return but said nothing.

He was watching her, an odd look in his eyes.

I have now a key to all her odd looks and ways.

He turned back to them, an odd look on his face.

I saw some of the others give her an odd look.

He had a very odd look on his face, one she'd never seen before.

He came back a few minutes later with an odd look on his face.