题目内容：

There was a very rich man named John. He gave a great puzzle (迷语)to the people in the town.

In his house, he had a very large room. “If anyone of you can fill my room within one day, I will give you 100,000 dollars.” Everyone in the town wanted to try.

The first man tried to fill the room with stones. At the end of the day, he was very tired, but the room was still empty.

The second man tried to fill the room with wood. He worked all day, but the room was not full. “That room is too big,’’ he said. “No one can do this.”

The third man said, “I can do it. It’s easy.” Everyone laughed. They thought he could not do it. Then, the man went to the park and played all day. His friend said, “Why are you playing? You should be working.’’ The man said, “I can do it. Don’t worry.’’ At 8 o’clock at night，the man came to the room with a small bag. The rich man said, “Haha...that bag is too small. It cannot fill the room.’’The man reached into the bag and took out a candle. He lit(点亮）the candle and said, “You see，the whole room is filled with light!”

1.How much would John give to the man who worked out the puzzle?(根据短文内容回答问题）

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2.Did the second man fill the room within one day?(根据短文内容回答问题）

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3.How did the third man fill the room?(根据短文内容回答问题）

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4.从短文中找出与下面句子画线部分意思最相近的单词。

He worked all day, but the room was not full. _____________________

5.In the passage, the underlined word “It’’ refers to ______________.