Sentence 1: As a teenager I loved having sleepovers with my friends. 
 Sentence 3: We were scared and woke my Mom up and we went to the door together 
 Sentence 4:  Cautiously she opened the door to discover a police officer 
 Sentence 5:  A neighbor called him after seeing our flashlights in the basement 
 Option 1: Late one night, we were telling scary stories when we saw a black cat. 
 Option 2: Late one night, we were telling scary stories when we heard knocking.