The students _______ busily when Miss Brown went to get a book she _______ in the office.
| A．had written, left | B．were writing, has left |
| C．had written, had left | D．were writing, had left |
What he said just now_______me of that American professor.
| A．mentioned | B．informed | C．reminded | D．memorized |
When we were young, every evening my brother and I____ stay at home waiting for our mother.
| A．would | B．might | C．should | D．could |
We arranged to meet at 8:00, but she never ______.
| A．turned down | B．turned off | C．turned over | D．turned up |
Missing the flight means _______ for another three hours.
| A．waiting | B．to wait | C．wait | D．to be waiting |
After I had finished eating, he advise me ______ immediately.
| A．set off | B．set aside | C．set down | D．set about |