2. Are Rod and Ben going to be teachers? No, they aren't. They aren't going to be teachers. They are going to be singers

3. Is Joan going to be a doctor? No, he isn't. He isn't going to be a doctor. He is going to be a teacher.

4. Is Ted going to be a singer? No, he isn't. He isn't going to be a singer. He is going to be a football player.

5. Are you going to be a teacher? No, I'm not (Yes, I am). I'm not going to be a teacher (I am going to be a teacher). I am going to be a (insert profession here).