--________do you go to the dentist? --Let me see, twice a year, maybe.
—What ____ you like ____ breakfast? —Some milk and two eggs.
—____ does your father work?—He works in a hospital.
—____, Tom. Is this your pen? —No, it isn’t. I think it’s ____.
The girl ____ red is my sister.
—How old is Tom?—He is ____.