问题
补全对话，情景问答
用yes，no回答完成对话。
1. Are you twelve?
Yes, . No, .
2. Am I in Class Four?
Yes, . No, .
3. Can you spell your name?
Yes, . No, .
4. Is that her computer?
Yes, . No, .
答案
1. I am; I'm not 2. you are; you aren't
3. I can; I can't 4. it is; it isn't