问题
填空题
| 写出下列单词的过去式。 |
| 1. watch 3. wash 5. clean 7. play 9. visit | 2. do 4. is 6. look 8. fail 10. win |
答案
1. watched 2. did 3. washed 4. was 5. cleaned
6. looked 7. played 8. failed 9. visited 10. won