She looked up, an expression of surprise on her face.

She looked up at the old man with an expression of surprise.

She pulled back, an expression of surprise on her face.

He looked forward to the expression of delight and surprise on her face.

He turned very slowly and looked at me; there was an expression of surprise on his face.

His face had not lost its expression of anxiety and surprise.

She brought a hand to her mouth as if to contain an expression of surprise.

She stopped herself abruptly and looked up at me with an expression of surprise.

Its face was turned up in an expression of surprise.

You look at me with an expression of doubt and surprise!