Most animals in zoos live in a _____. They live behind metal bars.
cage
Many people think zoos are _____. They can help to teach us about animals.
educational
(A) When did dinosaurs become _____? (B) They disappeared about 65 million years ago.
extinct
Are those animal cages clean or _____ ?
dirty
Someone (or something) not kind is _____.
cruel
Camels like to live in a dry _____.
environment
An animal that is _____ can choose to go anyplace it wants.
free
Are there too many animals living closely together at that zoo? Is it _____?
crowded
Bears are an example of a _____ animal. They don't usually live with people.
wild
We should try to _____ animals such as gorillas. We should make sure people don't kill them.
protect
It is _____ for some animals to travel many kilometers to look for food. It's normal.
natural
Many people who live in big cities never really have a chance to see _____.
wildlife
Tigers and Lions are different _____.
spieces
Some people believe it is _____ to keep animals in zoos. They think it isn't normal.
unnatural
