Pointing to the house on ____ roof grew lots of bush, the old man told me that was where I would stay.
| A．its | B．whose | C．where | D．which |
_______, the experiment will be successful.
| A．If carefully doing | B．If it done carefully |
| C．If carefully done | D．If doing carefully |
In the front of the hall _______ a group of pupils, who were listening to the lecture attentively.
| A．were sitting | B．sat | C．sit | D．was sitting |
Have you ever had a case _______ someone accused your journalists of getting the wrong end of the stick?
| A．where | B．which | C．that | D．when |
People all over the world are kept _______ of what is happening at once by means of the Internet.
| A．suspected | B．convinced | C．approved | D．informed |
——Is Jenny coming to the exchange meeting?
——_______. She may not have time.
| A．Up to you | B．Sure | C．I guess so | D．It depends |