11.   But Johnny Mack kept after her.

12.   He kept after me, trying to get me to quit, to the breaking point.

13.   Her husband, the pro at Muirfield Village in Dublin, Ohio, kept after her to come back, even getting Zachary to try to convince her.

14.   His father, the senator, felt he had himself done right a lot of the time, and he reliably kept after his son to follow suit.

15.   I just kept after the playing.

16.   I kept after him, and all of a sudden, he changed his mind and started to run again.

17.   I really had to work at it, and the skating is something I still have to keep after.

18.   I was kept after school almost daily for special tutoring.

19.   In the case of my father, for example, the thing I chose to keep after his death came from his wallet.

20.   In the second grade, Miss Kaufman kept me after school in a vain attempt to teach me to add columns of numbers without moving my fingers.