11.   Helsoe said that two hills overlooking an important crossroads near the U.N. base came under sustained Serbian attack on Wednesday.

12.   It was a sustained attack on the integrity of the Christian faith.

13.   It means a sustained offensive attack.

14.   Just when it looked as if they would gather momentum, a minor penalty here and another there interrupted any notions of a sustained attack.

15.   Most defense analysts think North Korea, with its economy on the brink of collapse and much of its population underfed, is incapable of a sustained attack.

16.   No sustained attack.

17.   Rosa said the sustained allied attack is taking its toll on al-Qaida and Taliban fighters.

18.   The bombing of a vast complex of caves tucked in a dusty ravine near the Pakistani border was the last sustained attack in the US air war.

19.   The fear is that if there is a sustained Western attack on Afghanistan, unrest could boil over in Pakistan.

20.   The new forces will allow the United States to mount a more sustained attack.