Sentence 1: Mike went to the dentist. 
 Sentence 3: Mike knew it was from not brushing enough 
 Sentence 4:  After, Mike saw the bill for his cavity fillings 
 Sentence 5:  Mike decided he was definitely going to brush more often 
 Option 1: The dentist told Mike he had three cavities. 
 Option 2: The dentist was proud of Mike because his teeth were perfect.