11.   But the enzyme is normally dormant because the water in those soils keeps them free of oxygen, which the enzyme needs to function.

12.   But they defended their recent California order as proof that they intend to keep markets free of abuse.

13.   Carlos Jarque, the secretary of social development, said last week that his agency was working energetically to keep Progresa free from political manipulation.

14.   Chandler worked out a two-part deal to keep it free.

15.   Colonial officials are banking on their varied pedigree as a host site of championship golf events to keep them free of disappointment.

16.   Efficiency is much improved when these are kept free of dust, cobwebs or pet hair.

17.   Haney cruised after that, keeping second base free of annoying visiting players the rest of the way.

18.   He also recommends small ice chests that can be carried with a shoulder strap to keep hands free when negotiating sand dunes, children and other beach cargo.

19.   Investigators faulted the company for not keeping workers free from hazards.

20.   Its mission is to keep patients free of pain and their quality of life as high as possible, to the very end.