.Oil prices have risen by 32 percent since the start of the year，______ a record US $ 57.65 a barrel on April 4.
| A．reached | B．reaching | C．to reach | D．to be reaching |
— Let’s Football World tonight, Frank. Okay? Just this once!
— Let me guess. You want to watch the History Channel, don’t you?
| A．employ | B．skip |
| C．modify | D．review |
—Shall Tom go and play football?
—Not unless he ______ his homework.
| A．has finished | B．finished |
| C．is to finish | D．would finish |
There is no doubt that the official was very weak-willed, otherwise he .
| A．would not be defeated |
| B．had not been defeated |
| C．were not defeated |
| D．would not have been defeated |
Helen didn’t mention anything about the dinner over the phone; she seemed about our appointment.
| A．to have forgotten | B．to forget |
| C．having forgotten | D．forgetting |
Many people see the computer as a “magic box”, and are not concerned with ______ it works.
| A．that | B．whether | C．how | D．if |