Sentence 1: Madeline was big fan of plants and flowers. 
 Sentence 3: Her sister, Beth, was terrible with plants and killed them easily 
 Sentence 4:  Madeline decided to get her a cactus, since they were hard to kill 
 Sentence 5:  Beth was happy with her gift, which managed to survive 
 Given Sentence 2: Her dad said she couldn't get one unless her grades improved.