11.   He has spent hours sharpening his skills against the curveball.

12.   He often spent his lunch hour in the Maywood Public Library, reading the newspaper and taking out books on construction, apparently trying to sharpen his skills.

13.   He served an apprenticeship in little clubs and in the Catskills, and later sharpened his skills with award-winning improvisational troupes like the Premise and Second City.

14.   He sharpened his skills negotiating with Russians and South Koreans about nuclear missiles as director of the Office of Nuclear Technology in the State Department.

15.   I still need to sharpen my skills.

16.   If anything, his time in the minor leagues has only sharpened his skills, Scioscia said.

17.   In addition to sharpening his skills, he became interested in designing artistic ironwork.

18.   In response, the space agency is taking precautions like having ground crews do many more dry runs meant to sharpen their skills.

19.   Judges licensed in New York and New Jersey are required to attend annual seminars to refresh themselves and sharpen their skills.

20.   Nash sharpened his skills on the not-so-rough-and-tumble Victoria playgrounds.