Sentence 1: When Niki was seven her parents got her a puppy named Bumper. 
 Sentence 3: Niki's mom looked everywhere for Bumper 
 Sentence 4:  Her mom had to leave to go to the school to pick up Niki 
 Sentence 5:  When she got there, Niki and Bumper were waiting at the curb! 
 Given Sentence 2: This year, Pa Wilson bought a huge 9 foot tree.