Sentence 1: Amy was outside at the dentist office. 
 Sentence 3: She called them to find out how she would get in the building 
 Sentence 4:  She was afraid she missed them when they didn't answer immediately 
 Sentence 5:  Finally they answered and told her she was at the wrong door 
 Option 1: Suddenly, the door opened and the dentist walked out. 
 Option 2: It was 5 o'clock and the doors were locked.