--- _______ will the fog and haze(雾霾) last? ---I have no idea. There is no sign of an end.
—Did you believe his story? —No, not at all. From ______very beginning, I knew it was ______ hoax.
—Shall we see a film to relax ourselves after the exam? —_________.
— The light is still on in his room. Do you know _________? — In order to practise for the English singing party.
— You seem familiar with Mr. John? —Of course, we _________ together for three years in the 1990s.
—_________ valuable advice you gave me! — I hope it can help.