Watching some children trying to catch butterflies one August afternoon, I was reminded of an incident in my own childhood. When I was a boy of twelve in South Carolina, something happened to me that made me n____1____ put any wild creature in a cage. We lived on the edge of a forest, and every morning at dusk （黄昏）the mockingbird (嘲鸟) would come and rest in the trees and s____2____ . There isn’t a musical instrument made by man that can produce a more beautiful sound than the song of the mockingbird. I decided that I would catch a young bird and keep it in a cage and in that way, I would have my own private musician.
I finally succeeded in catching one and put it in a cage. At first, being frightened, the bird fluttered about the cage, b____3____ it finally settled down in its new home. I felt very pleased with myself and looked forward to some beautiful singing f____4____ my little musician. On the second day of the bird’s captivity, my new pet’s mother flew to the cage with food in her mouth. The baby bird ate everything she brought to it. I was pleased to see this. C____5____ the mother knew how to feed her baby. The following morning when I went to see how my captive bird was doing, I discovered it on the floor of the cage, dead. I was terribly s____6____. What had happened! I had taken extremely good care of my little bird, or so I thought.
Arthur Wayne, the famous ornithologist (鸟类学家), who happened to be visiting my father at the time, hearing my crying over the death of my bird, explained what had happened. “A mother mockingbird, finding her young in a cage, will sometimes bring it poisonous berries. She thinks it b____7_____ for her young to die than to live in a cage.” Since then I have not caught any living creature and put it in a cage. All living creatures have a right to live free.