—________do you go to the dentist?—Let me see, twice a year, maybe.
---I’ve got to go now. ---Must you? I ______ you could stay for dinner with us tonight.
---What do you think of the match?---Oh, I’ve never seen _____ one before!
---How about the trip to Shanghai, Kitty?---Everything was fantastic if our car did not _______ for some times on the way.
---I think Miss Lin must be in the library. She said she would go there.---No, she __________be there. I have just been there.
---I didn’t know this was a one-way street, officer. --- .