Millions of people across the world have pets. Maybe you have one and maybe some of your friends do too. A pet can be ____ special friend, and you may think of him or her as a member of the family. A pet can play with you or just be with you when you don't feel like ____ (talk).

    ____ (unlucky), pets can't stay with ____ (we) forever. Like all living things, they will die. Sometimes a pet dies because he or she is too old. Sometimes a pet dies ____ an accident. Sometimes a pet gets too sick ____ (live) longer. Even when an animal doctor helps, there are some problems mat just can't ____ (solve).

    It's a sad thing to know a pet dies. You probably feel lonely ____ it seems like you lose a friend. You may even feel mad at the vet (兽医) for not being able to make your pet ____ (well) than it was. Maybe you feel sorry when you remember the fact that sometimes you weren't kind to your pet.

    To some children, it may seem like nobody ____ (understand) what they are feeling. Someone may say to a girl, "You can get another cat." But she knows she will never have a cat just like the dead one.