How to use "roar" in a sentence

At the same moment there was the sound of a drum, followed by a loud roar.

There was a roar of gunfire and the soldiers attacked, rushing towards the barricade

The place was relatively quiet, except for the muffled oceanic roar of the VIP crowd that waited in the main showroom, beyond the velvet curtains.

The roar of conversation grew louder as the sounds ticked away, and the quality of the roar became more frenetic, gayer, and more often punctuated with laughter.

As the sound of the Chevy faded, he could discern the roar of another vehicle, approaching fast