问题 填空题
写出下列单词的过去式。
1. walk ___________  
4. stop ___________ 
7. smile ___________
10. laugh ___________
2. see ___________   
5. think ___________
8. open ___________  
11. learn ___________
3. say ___________
6. sleep ___________
9. jump ___________
12. go ___________
答案

1. walked  2. saw  3. said  4. stopped  5. thought  6. slept  7. smiled  8. opened  9. jumped  10. laughed

11. learned  12. went

选择题
单项选择题