26.Although Patterson acknowledges the disappointing season he had with the Vikings, he has no second（ ）about how he went about his business.

44.Do help yourself to some fruit,（ ）you?

43.The central provinces have floods in some years, and（ ）.

42.This is an illness that can result in total blindness（ ）left untreated.

41.Acute hearing helps most animals sense the approach of thunderstorms long before people（ ）.