Sentence 1: Billy wasn't able to ride the big roller coaster last year. 
 Sentence 3: He knew he had grown in the past year 
 Sentence 4:  He ran up to the measuring stick to see if he was finally tall enough 
 Sentence 5:  He made it by over an inch so he could finally get on it! 
 Given Sentence 2: Several neighbors noticed their pets were scared to go outside.