—What are you busy with?
—The conference _______ in our city next week.
| A．held | B．will be held | C．be holding | D．to be held |
I’ve been away for only three years, _____ I can hardly recognize my hometown
| A．so | B．or | C．for | D．yet |
In China, you _____ vote when you are 18.
| A．must | B．might | C．can | D．would |
The professor could hardly find sufficient grounds _____his arguments in favor of the new theory.
| A．to be based on | B．to base on |
| C．which to base on | D．on which to base |
Many workers were organized to clear away remained of the World Trade Center.
| A．those | B．that | C．what | D．where |
A survey was carried out on the death rate of those who were infected by SARS, ________were surprising.
| A．as results | B．which results |
| C．the results of it | D．the results of which |