Sentence 1: Professor Smith rambled on his lecture. 
 Sentence 3: Jeff looked around the classroom out of boredom 
 Sentence 4:  A young girl caught his eye 
 Sentence 5:  She was diligently taking notes and appeared captured by the lesson 
 Option 1: The students did not appear interested. 
 Option 2: The students were all exceptionally interested in what he was saying.