Open ClozeExercise 12 of 101

I work (0) AS a motocross stunt rider - that is, I do tricks on my motorbike at shows. The Le Mans racetrack in France was (1) .......... I first saw some guys doing motorbike stunts. I'd never seen anyone riding a motorbike using just the back wheel before and I was (2) .......... impressed I went straight home and…