Phil hit the wall of the church with a sharp crack.

There was a sharp crack and he fell back on top of her.

No question but that this had been the sharp crack I'd heard.

He hit his knee a sharp crack on the way down.

At that very moment he heard a sharp crack behind him.

There was a sharp crack and he saw suddenly what should have been.

Something in his left arm broke with a sharp crack!

A moment later came the sharp crack of a shot.

Up it went - and hit the glass of the window with a sharp crack.

She turned away, just as a sharp crack sounded from inside the school.