11.   Like all game players, these composers had keen minds.

12.   Moments like that aside, Paulson had a keen mind, and it made him a giant in the aerospace industry.

13.   She is still beautiful, and though her eyesight and hearing are failing, there are still flashes of her keen mind and wicked sense of humor.

14.   They are also armed with the enthusiasm of youth and presumably the keen minds expected of Harvard men and women.

15.   With a reputation for a keen mind, he worked in protective security early on, meaning he looked after mundane matters like confidential files and secured buildings.

16.   She absorbed their nurturing inclinations and added a keen mind for business and promotion.