Sentence 1: Bobby and his family were at a drive through zoo. 
 Sentence 3: His mom turned her head to say something to his dad 
 Sentence 4:  When she wasn't looking an emu stuck its head through the window 
 Sentence 5:  It ate almost half a bucket of food before she could close the window! 
 Option 1: They had no food to feed the animals. 
 Option 2: They had buckets of food to feed the animals.