21.   Joan Lewis was an outreach worker then for a new drop-in center in Roxbury, working to prevent HIV infection in addicted pregnant women.

22.   Network Solutions executives said they were working to prevent a recurrence.

23.   Now she gets her health care covered and the educational grant helping to organize volunteer programs for Parents Anonymous, which works to prevent child abuse and neglect.

24.   Palestinian security services are obligated to work to prevent terror attacks on Israeli civilians, while the Israeli army is committed to easing restrictions on Palestinian trade and travel.

25.   Philip Morris, maker of the heavily advertised Marlboro brand, said it was working to prevent access to young people, not encouraging them to smoke.

26.   Secretly Beijing worked to prevent similar diplomatic surprises from occurring in the future.

27.   Shape dough into small balls, about the size of your palm, keeping the dough covered while you work to prevent it from drying.

28.   Some schools have worked to prevent riots.

29.   The antiasthmatic nasal spray cromolyn sodium, sold over the counter as Nasalcrom, actually works to prevent the nasal inflammation of hay fever.

30.   This works in conjunction with the quattro and the Electronic Stability Program, which further enhances stability by working to prevent skids in hard cornering or in emergency maneuvers.