完型填空
A boy and a girl catch 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 fillies 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.