Sentence 1: Bill was riding his bike down the street. 
 Sentence 3: A car was passing through the intersection 
 Sentence 4:  Bill's bike hit the tail end of the car 
 Sentence 5:  Bill had to be hospitalized for a week 
 Option 1: He rolled to a stop sign, but didn't stop. 
 Option 2: His car had recently broke down and he had no choice but to ride his bike to work.