填空题

Spring is the most beautiful season. Sweet flowers and green grass greet you everywhere. Everything is fresh. Closing your eyes, you can smell this.
One (11) spring day, I observed young people having fun using the wind to fly their kites. Multicolored creations of varying (12) filled the skies like beautiful birds darting and dancing. As the strong winds gusted against the kites, a string kept them in check.
Instead of blowing away (13) they arose against it to achieve great heights. They shook and pulled, but the restraining string and the tail kept them in tow, (14) upward and against the wind. As the kites struggled and trembled against the string, they (15) say, "Let me go! Let me go!\

【参考答案】

shapes and sizes
shapes and sizes意为:各种形状大小的。