Sentence 1: Kelley has worked for the post office for six years. 
 Sentence 3: The last time he delivered mail, he decided not to deliver it all 
 Sentence 4:  He threw away many people's mail and slept in his truck 
 Sentence 5:  Kelley's boss quickly found out and he was fired promptly 
 Option 1: He normally works at the counter, but occasionally has to carry mail. 
 Option 2: He is unable to work the delivery route because of a leg injury from college.