After they left, Rand sat frowning into his cup, finding no answers in the dark tea.
The first sat frowning through his window as he pondered the significance of the contest.
He sat frowning at the phone, after Lepke hung up.
She sat frowning over this for a full minute.
Then he sat thinking and frowning to himself for a long time.
He sat frowning into his screen from Science Center, across the city, for a moment.
He sat frowning for a minute or two.
He killed the instrument and sat frowning on the edge of the bed.
Brook sat frowning for a moment, then went on, "Let's get this clear.
I sat frowning at the tiles on the far side of the bathroom.