--His mother dances well.
-- So _____ and so _____.
| A．she does; his father does | B．does she; his father does |
| C．she does; does his father | D．does she; does his father |
He had little idea that it was getting so serious, __________?
| A．didn’t he | B．did he | C．wasn’t it | D．was it |
—___________ makes her different from the other students?
—Diligence, I think.
| A．How is it that | B．How is that |
| C．What is it that | D．What is that |
Not until I went through his paper _________ what rapid progress he had made in writing.
| A．I did find | B．did I find | C．I had found | D．was I found |
I don’t remember how many years ago _____ I was taken to Beijing for the first time.
| A．it was when | B．it was that |
| C．was it that | D．was it when |
Never in my wildest dreams ____ these people are living in such poor conditions.
| A．I could imagine | B．could I imagine |
| C．I couldn’t imagine | D．couldn’t I imagine |