41.   There are several ways to keep after the oil.

42.   Try keeping them after school for remediation.

43.   When there were fund-raising telephone calls that he had promised to make, for example, she would keep after him until he made them.

44.   You have to keep after it.

45.   But they told me before to keep after him no matter what.

46.   Children in area schools were kept inside after the bell rang.

47.   Critics in the United States kept after Clinton in the hours before the welcoming ceremony.

48.   Freitas kept after Casamayor, missing wildly with many of his punches, but by the fifth round Casamayor seemed to be figuring his fellow champion out.

49.   He said some of the dollars were also collected from police officers who kept them after having traveled overseas.

50.   He was ejected without getting a second technical after he kept after Adams and had to be restrained by a teammate.