_____ by the appearance, he has just been frightened at the terrible news.
| A．Judged | B．To be judged | C．Judging | D．Judge |
Not until I dropped off from school ____ how much time I had wasted.
| A．didn't I realize | B．did I realize |
| C．I didn't realize | D．I realized |
----Why don’t you ______ to a more sensible method?
----Well, I’m thinking about it.
| A．switch on | B．switch off |
| C．switch over | D．switch through |
—May I watch TV for another 15 minutes, Mum?
—Oh, dear, if you _____.
| A．can | B．must | C．may | D．should |
The entire hall burst into a great cheer and applause _______ the Nobel Prize winner appeared on the stage accompanied by the chairman.
| A．until | B．while | C．by the time | D．the moment |
John has determined to _______ teaching in the quake-hit area when he graduates from university.
| A．pick up | B．set up | C．take up | D．give up |