His question so startled her that for a moment, she couldn't answer.
He looked up as though the question had startled him.
The question startled her for she had not given it a thought.
His question startled me, not least because it was the same question my heart asked every day.
The question startled me, and I turned back to face him.
That question startled me when I first asked it of myself.
The question startled her so, that for the first time she actually looked at him, dark eyes widening.
The question startled me and I did not respond right away.
Her question, breaking into my thoughts out of nowhere, startled me.
The question startled him, though he managed not to make any physical reaction.