Sentence 1: Bill's mom was constantly telling him to tie his shoes. 
 Sentence 3: As he was walking down the stairs at school, he tripped on his laces 
 Sentence 4:  He fell down a whole flight of stairs 
 Sentence 5:  He had to wear a cast on his broken arm for six weeks 
 Given Sentence 2: He never listed to her, he just rolled his eyes.