It was announced that only when the fire was put out _________ to return to their dormitories.
| A．the students would be permitted |
| B．had the students been permitted |
| C．would the students be permitted |
| D．the students had been permitted |
If you want to get the driver’s_______ you should take some courses first in the traffic school.
| A．license | B．certificate | C．passport | D．permission |
The police officers here do not usually_____ guns.
| A．bring | B．carry | C．take | D．hold |
Coffee is said to have_____ effects.
| A．promoting | B．stimulating | C．encouraging | D．enhancing |
Information technology is taught in most schools, ____ we have entered the information society.
| A．so | B．while | C．and | D．for |
____ you may be right, I can’t altogether agree.
| A．While | B．As | C．If | D．Since |