Sentence 1: Gina's class was in the library. 
 Sentence 3: The teacher wasn't in the room 
 Sentence 4:  Someone in her class had taken pencils from her 
 Sentence 5:  Gina decided to look for her stolen pencils 
 Option 1: She returned to her classroom early. 
 Option 2: She asked the teacher if she could leave early.