11.   These are the sure signs that green corn tamale season is in full swing.

12.   Those black clouds are a sure sign of rain.

13.   We sighted a fishing boat in the distance, a sure sign of more sheltered water.

14.   She ignored me, which was a sure sign that she was mad at me.

15.   The return of the robins is a sure sign of spring.

16.   The RV parked in the driveway is a sure sign that their relatives from Florida have arrived.

17.   To a policeman an immediate answer is a sure sign of guilt.

18.   One sure sign that winter is taking a grip -- the gritting lorries are out.

19.   Another sure sign, is that council worker Derek Gamage is out with them.

20.   American colonization betrays growing trans-Atlantic regard, a sure sign of change.