陈独秀说：“我们现在认定，只有这两位先生可以救治中国政治上、道德上、思想上一切的黑暗。”这两位先生是（ ）
完形填空。
A boy and a girl catch a bird and 1 it in a birdcage (鸟笼）. They like it 2 and 3 it every day. A cat sees the bird and wants 4 her supper. 5 the bird is in the cage. She can't catch it. So she is very 6.
One day, she opens the door of the cage 7 wants to catch it. But the bird flies away. The cat 8, and she has 9. The two children 10 and see the bird isn't in. They are very angry and put the cat into the cage.
的解是（ ）．