1. Is the dining hall not small? - Yes, it is.
2. Are the waiters not in the dining hall now? - Yes, they are.
3. Are menu-cards not on the table? - Yes, they are.
4. Is steak not on the menu today? - Yes, it is.
5. Is Mary not a headwaiter? - Yes, she is.
6. Are cigarettes not on sale? - Yes, they are.
7. Are the flowers not on the table? - Yes, they are.