Sentence 1: Ian was studying for an exam. 
 Sentence 3: The next day, the teacher announced what the exam covered 
 Sentence 4:  He also passed the exam packet 
 Sentence 5:  Ian became nervous since he studied the wrong material 
 Option 1: He forgot the material he was supposed for. 
 Option 2: He made sure to study the material that was going to be on the exam.