Sentence 1: Jack really wanted a new TV in his room. 
 Sentence 3: If he could face his final, they would get a new TV 
 Sentence 4:  He worked as hard as he could on the test 
 Sentence 5:  He did pass and he got the new TV 
 Option 1: His parents agreed to make a deal with him. 
 Option 2: So he bought a new TV.