--________do you go to the dentist? --Let me see, twice a year, maybe.

They want to make more cars with ____ workers and ____ money.I think it’s impossible.

— ________ does your mother go to work in the morning?— She always goes to work at seven o’clock.

Internet is ________ used by people, especially by young people.

The old man lived in a town        ,but he doesn’t feel      .