—Where on earth have they gone?
—I have no idea, but I wish I .
| A．know | B．knew | C．would know | D．would have known |
33.—Tom hasn't finished what he was saying.
—He______.I already know what he has in mind.
| A．shouldn't | B．may not | C．can't | D．needn't |
32.______in the study lost in thought for a long time, I suddenly realized that nothing in the world remains .
| A．Having sit; unchanged | B．To sit; unchanging |
| C．Sitting; unchanged | D．Sitting; unchanging |
31. It was really a wonderful match. If only I__________it again.
| A．can watch | B．will watch | C．would have watched | D．could watch |
29. The sandstorm_________ for several days，which left a terrible sight across the west.
| A．kept off | B．kept away | C．kept back | D．kept up |
28.Mary felt__________from the outside world, since she lacked an Internet connection and couldn’t receive any e-mail.
| A．cut down | B．cut in | C．cut off | D．cut out |