She sat next to him on the couch and smiled uncertainly.

She was smiling at him a little uncertainly, as if for a moment he seemed a stranger.

Then, she looked up at him and smiled uncertainly.

He smiled uncertainly, "I would like to go back now.

She drew one hand back through her hair, then smiled uncertainly.

Amy smiled uncertainly, thanked the teacher, and left the room.

She looked up suddenly, aware of the doctor near her, and smiled uncertainly.

Her neighbor smiled uncertainly and transferred his attention to the place before him.

Barbara smiled uncertainly as she rose and moved away from him.

He managed a real smile, and she smiled back uncertainly.