Sentence 1: Tom had a bad tooth ache. 
 Sentence 3: He didn't see the dentist because it was too expensive 
 Sentence 4:  It was so bad that he finally gave in 
 Sentence 5:  He got his tooth pulled and the pain was over 
 Option 1: He screamed at night because of the pain. 
 Option 2: He slept at night because it wasn't painful.