Sentence 1: Jill was very nervous when she left her 3 year old at preschool. 
 Sentence 3: She thought he'd be shy and afraid 
 Sentence 4:  She worried about it all day 
 Sentence 5:  When she picked him he was laughing and full of stories! 
 Given Sentence 2: He had never been away from her for so long before.