1.   Ms. Roberts is among thousands of parents who face agonizing questions each time they take their children to a city sandbox.

2.   The real-life civics lesson on hate that Catholic schoolgirls and their parents have been learning over four days of sectarian violence posed an agonizing question Thursday.

3.   The tales of the three long-term survivors raised agonizing questions about whether more might have been saved.

4.   Their tales raise agonizing questions over whether more might have been saved.