1. Are you a doctor?  No, I am not
2. Are you thirsty? Yes, I am
3. Is Tom young? Yes, he is
4. Is her father a policeman? Yes, he is
5. Is Mary there? No, she isn't
6. Is your mother tall? No, she isn't
7. Is this your desk? Yes, it is
8. Is that his key? No, it is not
9. Are you students? Yes, we are              (Dùng we vì students là số nhiều)
10. Are you workers? No, we aren't           (Dùng we vì workers là số nhiều)
11. Are those boys singers? Yes, they are
12. Are these chairs old? No, they aren't

1. Are you a doctor? No, I am not
2. Are you thirsty? Yes, I am
3. Is Tom young? Yes, he is
4. Is her father a policeman? Yes, he is
5. Is Mary there? No, she isn't
6. Is your mother tall? No, she isn't
7. Is this your desk? Yes, it is
8. Is that his key? No, it is not
9. Are you students? Yes, we are
10. Are you workers? No, we aren't
11. Are those boys singers? Yes, they are
12. Are these chairs old? No, they aren't