THE RIDER FELL FORWARDS BECAUSE SHE WASN'T GRIPPING THE REINS WHEN THE HORSE SUDDENLY STOPPED.
WE WERE WAITING AT THE STADIUM WHEN ALL OF A SUDDEN THE LIGHTS WENT OUT.
MY DAD WAS REACHING THE FINISHING LINE WHEN IT STARTED TO RAIN.
WE WERE PULLING THE ROPE IN OPPOSITE DIRECTIONS WHEN I FELL DOWN AND BROKE MY ARM.
I WAS RUNNING A RACE WHEN I SUDDENLY BROKE MY ANKLE.
ANNE WAS HOLDING THE PRIZE FOR THE PHOTO WHEN SHE DROPPED IT BY ACCIDENT!