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   A boy and a girl catch (抓) a bird and _____ it in a birdcage (鸟笼). They like it _____ and _____ it every day, A cat sees the bird and wants _____ her supper. _____ the bird is in the cage. She can't catch it. So she is very _____. One day, she opens the door of the cage _____ wants to catch it. But the bird flies away. The cat _____, and she has _____. The two children _____ and see the bird isn't in. They are very angry and put the cat into the cage.