【题目】写出下列单词的过去式。
1. walk __________ 2. laugh __________
3. look __________ 4. dance __________
5. jump __________ 6. cook __________
7. wash __________ 8. phone __________
9. help __________ 10. do __________
【答案】1. walked 2. laughed 3. looked 4. danced 5. jumped 6. cooked 7. washed 8. phoned 9. helped 10. did
【解析】
略
