用下列所给词的适当形式填空
| food try animal small change |
Animals are people’s friends. But many ___________(76) are in great danger, because the environment that they are living in has __________(77)a lot. For example, their living area has become __________(78) and smaller because of the large population. They don’t have enough place to live in or enough ___________(79)to eat. At the same time, men are _____________(80) to kill these animals to earn more money or have their meat.