3. buy _______________
5. walk _______________
7. fly _______________
9. have _______________
4. write _______________
6. do _______________
8. go _______________
10. study _______________
1. read 2. caught 3. bought 4. wrote 5. walked 6. did 7. flew 8. went 9. had 10. studied
请写出下列动词的过去式. 1. read 3. buy 5. walk 7.相关攻略