阅读文章，选择正确的选项。

A young man is waiting at a bus stop. He's hungry. But it is rainy now, and he has no umbrella. Then he sees a boy standing under a big umbrella. The young man says to the boy," Can you go and get us two hamburgers, one for you and one for me? Here are two dollars." "Great!" says the boy and he goes to buy hamburgers. After some time, the boy is back. He is eating a hamburger. "Where is my hamburger?" asks the young man. "Oh, there is only one hamburger left (剩下). So I'm eating mine. Here is your dollar. "