根据文章内容，回答下列问题。
Once there was a rich man who lived with his wife and child. He loved the child so much that he sent him
to Oxford University for two or three years. At the end of the first year at the university, his son came home.
He wanted a change. And he also wanted to tell his parents about Oxford University.
It happened one night that the father, the mother and their son were having supper. They had in front of
them only two chickens. Just as they were about to eat, the father said, "My boy, I have spent a lot of money
on you to send you to Oxford University. Now I want to know what you have learnt." The son smiled and said,
"Father, I have studied a science which can make prove that these two chickens on the plate are really three
chickens."
"Well," said the father, "this is something I would like very much to know."
"There are two chickens on the plate," said the son, he took one of the chickens in this hand and said, "Here
is one more, and one and two makes three. So there are three chickens." Then the father took one of the
chickens to himself, gave the other to his wife, and said, "I will have one of the chickens myself, your mother
shall have another, and you can have the third for your supper and nothing else." The father kept his words and
so his son went without his supper.
1. How did the father do to love his son very much?
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2. When did the story happen?
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3. Why did the father ask his son to do that?
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4. Did the son change the two chickens on the plate into three?
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5. There's no ending in the article, can you guess what the boy did in the end?
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