Sentence 1: Mike decided to go to the zoo with his little brother. 
 Sentence 3: Eventually Mike and his brother ended up at the monkey exhibit 
 Sentence 4:  There they interacted with monkeys and enjoyed themselves 
 Sentence 5:  Mike and his little brother had a great time watching the monkeys 
 Option 1: They really liked the giraffes and spend most of the day feeding them. 
 Option 2: They went around looking at all the different animals.