---____________the boy in a black coat ___________the UK ? ---No. He is ____________ U.S student .

  I have been to London. I _____ there last month.

On our way home, our bikes______, so we had to walk home.

—Walking more is good for our health.—You’re right. So I’d rather _______ an hour’s walk to work than consider ________ a car.

— What’s wrong with you, sir? — My flight ______ ten minutes ago. What should I do?