题目内容：

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Opportunities don’t come often. They come every once in a while. Very often, they come quietly and go by without   1.  (notice). Therefore, it is advisable that you   2.  value and treat them with care. When an opportunity comes, it brings a promise   3.  never realizes it on its own. If you want to achieve something in intend to fulfill one of your 4.  (ambitious), you must work hard, make efforts and get    5.  (prepare). Otherwise, you will take no advantage of opportunities   6.  they come to visit you. The difference between a man who succeeds and 7.  who does not lies only in the way each treats opportunities. The successful person always makes adequate preparations to meet opportunities as they arrive. The   8.  (success) person, on the other hand, works little and just waits to see them pass by. In my opinion, there 9.  (be) plenty of opportunities for everyone in our society, but only those who are prepared adequately and qualified   10.  (high) can make use of them to achieve their purpose.