从A、B、C、D四个选项中选出可以填入空白处的最佳选项。
Long long ago, there was a swan with golden feathers. She lived in a lake. A woman lived in a small house 1 the lake with her two daughters. They were very poor. They worked hard all year round, but still, they lived a hard life and sometimes they even didn't have enough 2 to buy food.
The swan was 3 to see that. She said to herself, "I'll give one of my 4 to them each day, and then they can live a happy life with the money selling my feathers." That evening, she flew to the poor woman's house and left a golden feather on the table without saying anything. From then on, the swan came every day and gave them a feather. The woman was very happy because their life was much 5than before.
But day after day, the woman became greedy (贪婪).She said to her 6 . "The swan may fly away one day. If so, we will be poor again. We should take all her feathers 7 she comes next time."
"Oh, no, Mom!" cried the daughters, "This will hurt the swan. She helps us a lot!" But the mother wouldn't listen. When the swan came as usual, the mother caught her and took all her feathers. But suddenly, the golden feathers 8 chicken feathers.
Then, the Golden Swan said, "Poor Mother, I came to 9 you, but you wanted to kill me. Now, I am leaving and will 10 come back. Never be greedy!" With these words, the swan flew away.