All her time _______ experiments, she has no time for films.
| A．devoted to do | B．devoted to doing |
| C．devoting to doing | D．is devoted to doing |
For years, it was viewed as a serious problem, ________ that has never been really solved.
| A．one | B．where | C．it | D．which |
--We need a man full of wisdom to take charge of the project.
--________ the young man graduating from Harvard have a try?
| A．Will | B．Shall | C．May | D．Can |
Due to circumstances ________ our control, the performance has to be canceled.
| A．beyond | B．with | C．within | D．under |
There are some tall trees in our campus, some ________ more than forty meters.
| A．measure | B．measured | C．measuring | D．to measure |
--Late again !
--Sorry. I was ________ halfway for half an hour on my way to work this morning.
| A．broken down | B．held up | C．cut down | D．closed up |