【填空题】

    One windy spring day, I observed young people having fun using the wind to fly their kites. Multicolored kites of varying shapes and sizes filled the skies______beautiful birds dancing. ______ the strong winds blew against the kites, a string kept them in
check(在控制中).
    Instead of blowing away with the wind, ______ rose against it to achieve great heights. They shook and pulled, but the restraining (限制的) string and ______ heavy tail kept them in check, facing upward and against the wind. As the kites struggled and trembled against the string, they seemed to say, “Let me go! Let me go! I want to be______ !” They soared(翱翔) beautifully even as they fought the restriction of the string. Finally, one of the kites succeeded in breaking loose. “Free at last,” it seemed to say. “Free to fly ______ the wind.”
    Yet freedom from restraint simply put it at the mercy of an unsympathetic breeze. It fell ______ to the ground and landed in a mass of weeds.
    Let us each rise to the great heights, recognizing that some of the restraints that we  may be annoyed about are actually the steadying force ______ helps us rise and achieve.