Sentence 1: Richie's parents were gone for the weekend. 
 Sentence 3: Richie invited all his friends to come over 
 Sentence 4:  Richie and his friends partied all night long 
 Sentence 5:  Richie cleaned up the mess that they made the next morning 
 Option 1: He was scared so he went over to his aunt's house. 
 Option 2: He had the whole house to himself!