21.   The report will question why medical staff working with him did not blow the whistle on his activities.

22.   The smell of chlorine engulfed her and some one suddenly blew a whistle, the sound echoing in the large enclosed area.

23.   Then the referee started to blow his whistle and bellow at me.

24.   There were even rebelliously honest policemen, who might blow the whistle on the dishonest ones.

25.   With great courage, Vasseur has blown the whistle on an unacceptable situation.

26.   A guard was blowing his whistle.

27.   On the platform, the guard blew his whistle.

28.   Companies should protect employees who blow the whistle on dishonest workmates and work practices.

29.   The protesters chanted, blew whistles and hooted at the name of Governor Pete Wilson.

30.   The policeman blew his whistle.