She tilted her head to one side, as his expression turned thoughtful.

She looked back at the squirrels, and then turned thoughtful.

But as soon as he'd said it, his gaze turned thoughtful.

His expression turned thoughtful as he considered for a moment.

His face turned thoughtful as the waiter approached with the main courses.

The patrons cheered, and the girls' faces turned very thoughtful.

For a minute, Arbel just stared, then he turned thoughtful.

Derec said nothing, but his face turned tight and thoughtful.

He paused for a moment, his expression turning thoughtful.

Sylvia turned thoughtful as they picked their way down a steep slope.