_____ the Internet brings much profit in, it can cause o lot of social problem.
| A．If | B．While | C．Once | D．When |
—I wonder how much you charge for your services.
—The first two are free ________ the third costs $30.
| A．while | B．until |
| C．when | D．before |
—I think George doesn't really care for TV plays.
—Right, ________he still watches the program.
| A．and | B．but |
| C．or | D．so |
After the war, a new school building was put up ________ there had once been a theatre.
| A．that | B．where |
| C．which | D．when |
I thought I would be punished for the broken glasses ________ I ended up being praised for my honesty.
| A．and | B．or |
| C．but | D．so |
As a college freshman, he wanted to be an interpreter, ________ he joined a translation club.
| A．for | B．but |
| C．so | D．as |