1.   Her head hit the concrete with a sharp crack.

2.   I was telling myself that it would soon be over when I heard a sharp crack.

3.   Off in the distance, sharp cracks of gunfire and the occasional dull blast of dynamite interrupted the rural drumming.

4.   Sometimes a sharp crack and something falling into darkness.

5.   The bomb detonated with a sharp crack, sending tiny but razor-sharp pieces of metal into the backs of the gun crews.

6.   The sharp crack of the pistol always brought her awake, cold and shivering.

7.   The umbrella fell to the floor with a sharp crack of the ferrule on the tile.

8.   There was a sharp crack as the branch broke off.

9.   The battle did not last long, bursts of automatic fire interspersed with the sharp purposeful cracks of single shots.

10.   And with another sharp crack, another bolt of perfectly straight lab-grown lightning hits home.