Sentence 1: I am staring at the clock non stop. 
 Sentence 3: Thinking of all the things I can do 
 Sentence 4:  The last day of school seems the longest 
 Sentence 5:  However, I know soon school will end 
 Option 1: Waiting for school to end and summer to begin. 
 Option 2: Waiting for school to start and summer to end.