完形填空
It was very cold that day. It was __1__ heavily and the ground was covered with __2__ snow. The shepherd thought it was dangerous to __3__ the hill and it was difficult for the sheep to find some __4__ there. So he decided to stay in the __5__ room. He put some hay(干草) in a pen(围栏) __6__ the sheep could eat it when they were __7__. The dog, who felt cold outside, lay on the __8__ hay and soon went to sleep.
At noon the sheep wanted to eat the hay. They were __9__ afraid of the dog and __10__ could get close to it. At last the __11__ sheep came to the hay. Before he started to eat, the dog heard it and opened his eyes. He barked(吠) loudly to __12__ him. The sheep ran away __13__. Looking at the unnatural(不近人情的) dog, the sheep began to talk __14__.
“What a selfish(自私的) dog!” said one of the sheep. “He cannot eat the hay, and yet refuses to __15__ those who can to eat!”
