Sentence 1: Sandy arrived to work to meet a bouquet of red roses on her desk. 
 Sentence 3: Sandy asked the secretary who delivered the flowers 
 Sentence 4:  The secretary informed Sandy that they were from a secret admirer 
 Sentence 5:  Sandy decided to enjoy the flowers and the nice gesture it represents 
 Given Sentence 2: Sandy was intrigued to find out who the flowers were from.