Sentence 1: The teacher announced that it was snack time. 
 Sentence 3: When I began eating, another student asked me for some 
 Sentence 4:  five minutes later, they asked for more 
 Sentence 5:  He ended up finishing the bag before I did 
 Option 1: Everyone, including myself, took out snacks. 
 Option 2: We had all forgotten our snacks.