6.阅读下面短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项。
One Friday night, a poor art student Joseph was playing the violin at New York subway station. In front of him was a (1) with a few dollars. He needed some more money for his tuition (学费).
Joseph was playing his last piece of music when a middle-aged man who looked excited (2) and put a 50-dollar banknote (钞票) into the hat. Joseph nodded to the man (3) .
The next (4) , Joseph came to the same place as usual. (5) from the night before, he took out a large piece of paper and laid it on the ground. The paper said, "Last night, a gentleman put something unexpected into my hat (6) . Please come to get it."
Interested, many passers-by stopped, wondering what the unexpected thing could be. Just then, a man (7) through the crowd to Joseph and shouted excitedly, "Thank God you're here. I knew you are a(n) (8) man."
"Did you lose something, sir?" asked Joseph.
The man nodded, "Yes, a lottery ticket."
Joseph took out a ticket, "Is this one (9) ?"
The gentleman (10) the ticket and then hugged Joseph tightly, saying "Thank you, thank you, young man."
It turned out that the middle-aged man (11) the ticket the other day and was excited to find that he was the lucky (12) of $100,000. Overjoyed, he took out a (13) banknote and put it in Joseph's hat on his way home. (14) , the lottery ticket was also thrown in. When Joseph found it was a winning lottery ticket, he decided to return it to the owner. To thank Joseph, the owner (15) him$500 as a gift.
Joseph's honesty paid off.