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 |
The man is weak in health, and is advised by the doctor ________more exercise.
| A．taking | B．should take | C．took | D．to take |
The Yongle Bell(永乐大钟) in the Great Bell Temple is ________a man.
| A．as three times tall as | B．three times taller as |
| C．three times as tall as | D．as three times like |
—Hi, Lydia. Are you going to the concert on Friday?
—I’d like to. But there are so many problems_______.
| A．remaining to be settled | B．remained settling |
| C．remaining to settle | D．remained to be settled |
We don’t doubt _______ we will complete all the projects before the year 2010.
| A．when | B．if | C．that | D．whether |
Victor apologized for ________ to inform me of the change in the plan.
| A．his being not able | B．him not to be able | C．his not being able | D．him to be not able |