Only then __________ how much damage had been caused.
Professor Li and his wife are now at work on a novel next year.
The couple walked together as far as the second crossing of the street they waved goodbye to each other.
I had been puzzled over the problem for over an hour without any result, all at once a solution flashed across my mind.
—So hard in the past few years that he has made great progress in English.—I can see that, only a few mistakes in this exam.
Betty shows great interest in this poem now, but she thought it boring she read it.