He didn't hear the thud of running feet behind him.
They heard the thud as he reached the ground outside.
Then a window went down at the back of the car and I could hear the thud as it opened.
After a time, he heard a soft thud behind him.
Hearing a thud, he turned his head to the side.
Then he heard the thud of a vehicle door outside.
She heard a thud, and the two small lights went out.
He could hear the thud of boots on the street outside.
To my surprise I heard the thud of the front door, and found that the girl had followed me.
A guard had, by chance, heard the thud of the general's body falling to the floor.