Sentence 1: Mary and her husband were going to a party. 
 Sentence 3: The babysitter let the children drink as much water as they wanted 
 Sentence 4:  When Mary came home, she checked on the sleeping children 
 Sentence 5:  Boys boys had peed their beds 
 Option 1: The babysitter never showed up so Mary and her husband had to stay home. 
 Option 2: They hired a new babysitter for their children.