语法填空。 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 2 (advise) that you should value and treat them with care. 3 an opportunity comes, it brings a promise but never realizes it 4 its own. If you want to achieve something _ 5 intend to fulfill one of your ambitious, you must work hard, make efforts and get prepared, 6 ,  you will take no advantage of opportunities when 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 8 (make) adequate preparations to meet opportunity- ties as they duly arrive. The unsuccessful person, on the other hand, works little and just waits to see them pass by. In my opinion, there are plenty  of opportunities for 9 in our society, but only those 10 are prepared adequately and qualified highly can make use of them to achieve their purpose.