题目内容：

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

Almost everyone has some kind of hobby. 1.  may be anything from collecting stamps to making model planes. Some hobbies are very expensive, but 2.  are valuable only to their owners. I know a man who has a coin collection worth several thousand dollars. A short time ago he bought a seldom   3.  (see) fifty-cent piece worth $250! He was very happy about what he bought and thought the price was  4.   (reason).  5.  the other hand my youngest brother collects match boxes. He has almost 600 of them but I doubt 6.  they are worth any money. However, to my brother they are very valuable. Nothing makes him 7.   (happy) than to find a new match box for his collection. That’s8.  a hobby means, I guess. It is something we like to do in our spare time simply 9.  the fun of it. The value in dollars is not important, but the  10.   (pleased) it gives is.