完形填空Long long ago, there was a swan（天鹅）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, 2 still, they lived a hard life and sometimes they even didn't have enough 3 to buy food.
The swan was 4 to see that. She said to herself, "I'll give one of my 5 to them each day, then they can live a happy life with the money selling my feathers." That evening, she 6 to the poor woman's house and left a golden feather on the table without saying 7 .From then on, the swam came every day and gave them a feather. The woman was very happy because their life was much 8 than before.
But day after day, the woman became greedy（贪婪）.She said to her 9 "The swan may fly away one day. If so, we will be poor again. We should take all 10 feathers if she comes next time."
"Oh, no, Mom!" cried the daughters, "This will 11 the swan. She helps us a lot !"But the mother wouldn't listen. When the 12 came as usual, the mother caught her and took all her feathers. But suddenly, the golden feathers 13 chicken feathers.
Then, the Golden Swan said, "Poor Mother, I came to 14 you, but you wanted to kill me. Now, I am leaving and will 15 come back. Never be greedy!" With these words, the swan left.
