阅读短文,从方框中选择适当的单词填空。
| themselves lions sad in food |
Many people may think that animals in the zoo are happy and lucky, but most of them are . Do you know why? Animals like tigers,
____________ and bears usually live in forests or mountains. They run, jump, play with their children and find small animals for
. But now they have to stay in small rooms
the zoo. They don’t have to find food by
because the zookeepers feed them.