-- I saw Tom in the bookstore just now.-- No, it ______ him. He moved to the USA last month.A. mustn’t be B. may not be C. can’t be
—I am too tired to walk any farther, Jack. —______, Daniel. You can do it.
I don’t know ______ Apple iphone4s.
I hate people ______ talk much but do little.
—Could we go and watch the football game? —No, ______ you have the tickets.
—Can I go to the park, Mum? —Certainly. But you ______ be back by six o’clock.