B) Use the correct forms of the verbs in parentheses. Do not refer to the passage until you finish your exercise. 用括号中动词的正确形式填空，完成练习后再对照课文，核对答案。
Once upon a time, there (be) a mother duck. She (have) six little ducklings. Five of the ducklings (be) small and yellow, but the last duckling (be) big and grey. “He doesn't look like us! What an ugly duckling!” the other ducklings said, “That's not nice!” said Mother Duck, “He's still a duck like us!”
At the river, the ugly duckling (swim) well, just like all the other ducklings. But the other ducklings still (laugh) at him and (tell) him to go away. It (make) the poor duckling very sad, so he (decide) to search for a new home. He (meet) many other birds, but all of them (think) that he was ugly too. They (not want) him to live with them.
One day, the duckling (meet) a cat and a hen. “May I stay with you?” he (ask) hopefully. But the two animals (say) no. They (not like) him because he could not purr or lay eggs!
Some days later, the ugly duckling (come) to a lake. There, he (see) three beautiful swans with long necks and white feathers. “I wish I looked like you!” he (cry). “My friend, you do look like us! Look in the water!” one of the swans (say). The duckling (look) down, and to his surprise, he (see) that he (be) a beautiful white swan too!

was, had, were, was, swam, laughed, told, made, decided, met, thought, didn't want, met, asked, said, didn't like, came, saw, cried, said, looked, saw, was

本题要求根据故事内容以及一般过去时的用法，用所给动词的适当形式填空。一般过去时表示过去某个时间发生的动作或存在的状态，动词要用过去式形式，be动词的过去式有was（主语是第一、三人称单数）和were（主语是第二人称以及复数），行为动词的过去式一般是在动词原形后加 -ed ，部分动词有特殊变化。
1. “Once upon a time”表明是过去的时间，there be句型中主语“a mother duck”是单数，所以用was。
2. 故事整体是一般过去时，主语“She”是第三人称单数，have的过去式是had。
3. 主语“Five of the ducklings”是复数，be的过去式用were。
4. 主语“the last duckling”是单数，be的过去式用was。
5. 主语“the ugly duckling”是单数，swim的过去式是swam。
6. 主语“the other ducklings”是复数，laugh的过去式是laughed。
7. and连接并列谓语，tell的过去式是told。
8. 主语“It”是单数，make的过去式是made。
9. 主语“he”是第三人称单数，decide的过去式是decided。
10. 主语“He”是第三人称单数，meet的过去式是met。
11. 主语“all of them”是复数，think的过去式是thought。
12. 根据语境是否定的，want是实义动词，否定要借助助动词didn't ，后面动词用原形，即didn't want。
13. 主语“the duckling”是单数，meet的过去式是met。
14. 主语“he”是第三人称单数，ask的过去式是asked。
15. 主语“the two animals”是复数，say的过去式是said。
16. 根据语境是否定的，like是实义动词，否定借助助动词didn't ，后面动词用原形，即didn't like。
17. 主语“the ugly duckling”是单数，come的过去式是came。
18. 主语“he”是第三人称单数，see的过去式是saw。
19. 主语“he”是第三人称单数，cry的过去式是cried。
20. 主语“one of the swans”是单数，say的过去式是said。
21. 主语“The duckling”是单数，look的过去式是looked。
22. 主语“he”是第三人称单数，see的过去式是saw。
23. 主语“he”是第三人称单数，be的过去式用was。