Jack asked his teacher, " What is greed?" The teacher said, " In order to answer your question,go __ 1 the chocolate factory next to our school and pick the one bar of chocolate you like the 2 . But there is a rule. As you pass through the factory, you can't turn back.You must pick the chocolate as you go forward only. Jack went the chocolate factory. As he walked, he saw a bar of chocolate that was wrapped 3 . He instantly liked it but he wondered if he might find a much bigger one further. So Jacked walked on, and then he saw another bar of chocolate. But again, he thought about the same thing. When the factory tour was about to 4 , Jack couldn't see any chocolates as big as the one he didn't pick earlier and started to regret his decision of letting it go.