It was almost winter. Bruno was very cold so he needed a 1 place to get through the winter. He searched 2 and finally found a cave（洞穴）. It was perfect but he still felt worried. He couldn't 3 the cave because there were many rocks and tree roots（根） in it.
Bruno thought, "I will 4 the rocks and roots to make the cave bigger. Then I can make myself 5 and sleep well." Bruno started to work 6 . He pulled（拉）at the strong roots again and again, but nothing happened. When Bruno was 7 , he heard a sound, "Crack!"
Bruno turned around and saw a squirrel（松鼠） eating a nut.
"Hi, I'm Jack!" the squirrel said, "Do you need help?"
"I'm trying to make a big cave 8 I need a place to sleep. ""Maybe I can help you. " the squirrel said.
"But you are so small. " Bruno didn't believe what the 9 said. Jack told Bruno to wait and left in a hurry. Minutes later, he 10 with a book in his hand. Bruno put 11 his glasses and began to read.
The story was about a lion and a mouse. The lion thought the mouse was too 12 to help him. One day the lion got caught in a net（网）. The mouse cut the net with his teeth and 13 the lion.
This gave Bruno an idea. Jack can use his 14 to help, too! Then Jack and Bruno worked together. Jack cut the roots and Bruno carried 15 out of the cave. They succeeded!
"Do you like your new home?" Jack asked.
"Yes!" Bruno said excitedly, "And I know small friends can be a big help!"
