Sentence 1: Keith was always interested in being a spy for the NSA. 
 Sentence 3: He was the smartest in his school and went to a good college 
 Sentence 4:  After that, he applied for a spy job 
 Sentence 5:  Keith got the job and now he is a spy 
 Option 1: He studied very hard and worked hard in school. 
 Option 2: Unfortunately, he didn't study very hard and he dropped out of school.