11.   Three seconds later there was a loud bang and the hall was filled with smoke.

12.   There was a loud bang and the whole building was plunged into darkness.

13.   Suddenly they heard a loud bang.

14.   The book fell to the floor with a loud bang.

15.   I heard four or five loud bangs.

16.   They were awoken by a loud bang.

17.   The loud bang jolted me awake.

18.   She says they heard a series of loud bangs.

19.   He says he heard a loud bang -- his windscreen shattered, he spotted some children.

20.   It was a very loud bang.