Sentence 1: Marcus and Trent have been planning a picnic together. 
 Sentence 3: Marcus and Trent arrived at the park 
 Sentence 4:  They laid out the blanket and all the food 
 Sentence 5:  As soon as they sat down, a flash storm hit 
 Option 1: They spent all morning preparing lunch and snacks. 
 Option 2: They spent all morning deciding what to eat when they went to go to the lake.