Peter: Mrs. Kelly, what time is it?
Teacher: It's one o'clock.
Teacher: Let's line up.
Minwoo: Excuse me, what time is it?
Zookeeper: It's two o'clock.
Sally: What time is it?
Minwoo: It's three o'clock!
Teacher: Children, it's four o'clock.
Teacher: It's time to go home.
Zookeeper: Good-bye!