Once a little boy found a caterpillar（蝴蝶幼虫）.One day the caterpillar climbed up a stick and started to create a cocoon（茧）. His mother told him the caterpillar was going to go through a(n) 1 and become a butterfly.
The little boy watched every day, waiting for the coming out of the butterfly. One day it happened, a small hole 2 in the cocoon and the butterfly started to struggle（挣扎）to come out. At first the boy was 3, but soon he became worried. The butterfly was struggling so hard. But it looked like it was making no 4. Hoping to see it out, the boy decided to help. He cut the cocoon with scissors to make the hole 5 and the butterfly quickly flew out!
To his surprise, the butterfly had an unexpectedly large body and small wings. He 6 to watch the butterfly, hoping that the wings would be dry and large to support the huge body. But nothing happened! It never was able to 7.
The boy tried to 8 what had gone wrong. To help him, his mother took him to talk to a scientist. He 9 that the butterfly was supposed to struggle. Without the struggle, the butterfly would never fly. The boy's good wish 10 the butterfly.
As you go through school life, keep in mind that struggling is an important part of any experience for growth. It is the struggle that cause us to develop our ability to fly.
