21.   Now she says the hard part is to sustain her momentum, to continue to make merchandise customers understand.

22.   Over a beer at a Washington bookshop-cafe one recent evening, Sellers seemed unsure whether the movement could sustain its momentum.

23.   Porous defense made it difficult for the Celtics to sustain momentum.

24.   Some analysts in the industry are skeptical about whether the momentum can be sustained.

25.   Still, Palmisano will have a difficult time sustaining the momentum.

26.   Still, many economists were optimistic that the incipient recovery will sustain its momentum.

27.   That decline has been painfully reversed, but the city is still struggling to sustain momentum.

28.   The Aggies will find out if this win was a one-shot wonder, or if they can sustain some momentum.

29.   The critical second step for McCain will be to sustain his momentum in the less friendly political climate of South Carolina and to translate his momentum into campaign cash.

30.   The idea now is to sustain the momentum Friday when another unaccommodating host awaits at the Forum.