阅读短文，完成任务。

Everybody has a home. People have homes. Animals also have homes. People live in many different houses. Animals have different homes, too. Some animals live in holes(洞) under the ground. The woodchuck(土拨鼠)lives under the ground. His home has two doors. If an enemy(敌人)comes into his home from one door, the woodchuck goes out from the other door. Some animals live in holes in trees. Some squirrels(松鼠)have nests(窝)high in trees and some live in holes in trees. Some birds live in holes in trees. Some birds live in nests in trees.