—I’m in Class 4. Are you in Class 4, ____? —Yes, I am.
–Look at that girl! Is it Susan? --No, it _______ be hers. She has gone back to her hometown.
–Would you mind my using your dictionary? --__________.
–Thanks for your help. --_________.
–Where are you going for your holiday? --Well, we _______ yet.
Mike is from America. He ________ English.