从A、B、C、D四个选项中选出能填入空白处的最佳答案。
Once upon a time, there was an owl(猫头鹰) in the middle of a dark forest. All the animals knew that he was the wisest among 1 of them. So they often went to him and told him their problems. Then the owl always told them 2 to solve their problems.
One day, a little bird came to the owl. She was 3.
“What's wrong with you?” asked the owl.
“I'm not happy at all, Mr. Owl. I don't want to be a bird any more.” the bird 4.
“Why don't you want to be a(n) 5?” asked the owl.
“Because I am so small and weak,” she cried. “I want to be as big and strong as the lion. He is important, but I am not. ”
Then the owl said 6 in her ear. Then the bird dried her tears and 7 away. One week later, the bird came back. “Thank you very much, Mr. Owl. You are so 8,”she said to the owl. “I'm very happy now. Every day, I watch out for （监视）lions and tigers. 9 they come near, I shout as loudly as I can. Then they all run and hide. They often 10 me for that. I am useful and important now. ”
The wise owl smiled and said: “Dear, no one in the world is useless.”
