Sentence 1: Tim was frustrated because he had to still do his calculus homework. 
 Sentence 3: He asked his father for advice 
 Sentence 4:  His father instructed him to go to a website with various tutorials 
 Sentence 5:  Tim was able to grasp the concepts and receive a passing grade 
 Given Sentence 2: He looked at it for hours confused as to where to even start.