31.   This spring the ante is raised even further.

32.   Though Ford leveled the playing field, Chrysler soon raised the ante.

33.   Thus far, however, Hilton has declined to raise the ante.

34.   Will he be tempted to raise the ante at a yearling sale in an attempt to hit it big once more?

35.   You can do the workouts at an easy pace or you can raise the ante, the choice is up to you.

36.   And then Nolan Ryan raised the ante to seven.

37.   But the government of Karadzic loyalists defied her, raising the ante in a struggle that could determine the fate of Bosnia.

38.   Her move raised the ante in a struggle that could determine the fate of Bosnia.

39.   I am raising the ante.

40.   North Korea is raising the ante by threatening to reactivate its nuclear facilities unless a reactor contract is signed soon.