. Some of the suspects(嫌疑犯) ________ refused to answer and kept their mouths shut.
| A．questioning | B．being questioned |
| C．questioned | D．to be questioned |
They went on well at first but eventually everything ______ they had worried about happened．
| A．which | B．what | C．that | D．when |
Either you or I _____going to the teachers' office after class.
| A．am | B．is | C．are | D．will |
—Hi, David, I heard you had an accident this morning．
—Yes．Luckily, I hit the brakes in time ______ I would have been injured badly．
| A．and | B．but | C．or | D．so |
It is well-known to us all that knowledge is __ treasure, but practice is ___ key to it.
| A．a, ∕ | B．a, the | C．the, the | D．∕ , the |
— Do you have Mary's address?
— Sorry, I don't have it ______ me at present．
| A．to | B．on | C．for | D．from |