 Complete the following phrase:  Keough had one of the best seasons of her career in 1989. She retained her UK title, winning in 52.37. Then at the European Cup in Gateshead, she ran 51.66, to finish second behind East Germanys Grit Breuer and ahead of that years World Indoor Champion, Helga Arendt of West Germany. In retaining the AAAs 400 m title, she improved her PB to 51.09. She also earned selection for the 