完形填空。
A duck is sitting on five eggs. Then the eggs break and five baby ducks come out. The mother duck looks _________ her babies. She has four beautiful baby ducks. __________ one is different. It is big and brown. _________ legs are very long. She doesn’t like this baby duck.
“Go __________,” she says to the different duck. “You are not my baby.”
The different duck says ________ to its brothers and sisters and goes away. It is ______.
Then it sees a pig with its baby __________.
“Are you my mother?” it __________.
“No,” says the pig.“You are not my baby. Go away.”
So the different duck goes away. __________ it sees a fox.
“Mother, am I your baby?” the different duck asks the fox.
“No, I am not your mother,” says the fox. “But I like you. I can eat you for dinner.”
The different duck _________ away. It is very sad. It __________ its mother.
Then it hears another animal. It is __________ to the different duck.
“You are very beautiful,” it says. “I am _________ mother.”
The different duck looks at the animal. It is a big white bird. It __________ a long neck.
“Yes,” says the white bird. “ I am a swan. And you are a baby __________.” The different duck is very __________ now.
“And here __________ your brothers and sisters,” says the swan.
（1）A. for      B. after      C .up       D .at
（2）A. But      B. And        C.So        D .The
（3）A. It’s    B. It is       C. It       D .Its
（4）A .on        B. away       C.off        D .out
（5）A .hello    B.goodbye      C. nice     D. anything
（6）A. happy    B.hungry      C. sad      D. surprised
（7）A .ducks    B. swans      C. pigs     D. birds
（8）A. says      B.answers      C. talks     D. asks
（9）A. After    B.Before       C. Soon     D. And
（10）A .walks   B. goes       C.runs      D. swims
（11）A. want    B. wanted     C. wants    D. miss
（12）A. saying  B. telling    C.talking    D .shouting
（13）A .you     B.her         C .his      D. your
（14）A. have    B. has        C .with      D. got
（15）A .swan    B. fox        C .pig      D. duck
（16）A. happy   B. hungry     C. sad      D .surprised
（17）A .am      B. is         C.are       D .were