11.   So they are perfecting the skills.

12.   The former University of Houston star may have perfected his skills on the practice field next to Hofheinz Pavilion.

13.   The school offers three types of clay target shooting, customized instruction and superior equipment to help novice and advanced shooters perfect their skills.

14.   They spend many hours at the range perfecting their skills so the animals experience as little trauma as possible.

15.   I hope Mr. McGwire will talk about the hours he spends in the weight training rooms as well as perfecting his skills on the field of play.

16.   Many Hong Kong actors and directors perfected their skills during the boom before leaving for better money and bigger projects in Hollywood in recent years.

17.   Others readily admit they look abroad to perfect their skills on older children and adults suffering from conditions usually corrected during infancy in the United States.

18.   Strangely, Martinez perfected her skills in Switzerland -- not Spain.