Sentence 1: George sprained his ankle going down the stairs. 
 Sentence 3: People were sympathetic at first, but George wouldn't stop 
 Sentence 4:  Many of George's friends became very frustrated 
 Sentence 5:  Everyone was relieved when George's ankle finally healed 
 Option 1: Since the injury, George refused to talk about his ankle. 
 Option 2: Since the injury, George would not stop talking about his ankle.