—He failed in the exam again.
—He __________his teacher’s advice.
-----I thought I ______something burning .
-----Really?
--- I haven’t seen Mary recently. And you?
--- Me neither. I’m afraid she _________ to her experiment for too long a time.
--- _________ either Tom or I fit for the temporary job?
--- Neither he nor you _________.
--- Why do you think David is the suitable person for the job?
--- Because he has higher ambitions _________ others have already been satisfied.
—I just wonder that made Mark Twain so famous a writer.
—Of course his early experiences.
—What made Tom so sad?
— .