Sentence 1: It was approaching time for finals. 
 Sentence 3: I gathered the notes I had and settled down to study 
 Sentence 4:  It was slow going, and I ended up pulling an all nighter 
 Sentence 5:  The day of the test I was tired, but confident that I was ready 
 Given Sentence 2: I was worried, as I needed a B to pass the class.