短文填空（10个小题，每小题1分，共10分）
阅读短文，用方框内所给单词的正确形式填空，使短文意思通顺、完整。请将答案写在短文后相应题号的横线上。注意：①每个词只能用一次。②每空限填一词，有些词需要做相应的变化。③其中有两个多余选项。请选择适当的词语，将其正确的形式填入文章的空白处，每词限用一次。

The air we breathe is so freely available that we take it easily. Without it we could not survive more than a few     . For the most part, the same air is available to everyone, and everyone   it. Some people use the air to sustain(支撑) them while they sit around and feel sorry for   . Others breathe in the air and use the   it provides to make a magnificent life for themselves.
The opportunity is the same way. It is everywhere. The opportunity is so freely available that we take it for easily. Yet the opportunity alone is not enough to create  . The opportunity must be    and acted upon in order to have value（价值）. So many people are so anxious to get a "ground floor opportunity", as if the opportunity will do all the   . That’s  .
Just as you need air to breathe, you need the opportunity to  . You must make use of that opportunity. That’s not up to the opportunity. That’s up to you. It doesn’t matter what "floor" the opportunity is on. The thing matters is   you do with it.