—How much do you know about the 3D film technology?
—A little. Not until ________ the hot movie Avatar 
________ some about it.
| A．did I see; did I begin to learn | B．I saw; I began to learn |
| C．I saw; did I begin to learn | D．did I see; I began to learn |
Mark ______ a basketball game in the stadium that _______ 5000 people.
| A．holds; is holding | B．is holding; holds |
| C．holds; holds | D．is holding; is holding |
The conference has been held to discuss the effects of tourism ______ the wildlife in 
the area.
| A．in | B．on | C．at | D．with |
Our son doesn’t know what to _____ at the university; he can’t make up his mind about his future.
| A．take in | B．take up | C．take over | D．take after |
We won’t give up _____ we should fail ten times.
| A．even if | B．since | C．whet her |
D．until |
_______ and guilty, Maggie put the book on the shelf she had secretly placed in her schoolbag.
| A．Frightened | B．Frightening | C．Being frightened | D．To be frightening |