A survey was carried out on the death rate of those who were infected by SARS, _ _______were surprising.
| A．as results | B．which results |
| C．the results of it | D．the results of which |
Had I known about this computer program, a huge amount of time and energy .
| A．would have been saved |
| B．had been saved |
| C．will be saved |
| D．was saved |
_______the thick clouds, you would find the kite in the sky easily.
| A．Had it not been for |
| B．If it were not |
| C．If it had not been for |
| D．Were it not for |
Experts say ________ to sunlight for too much time will do harm to one’s skin.
| A．exposed | B．having exposed |
| C．being exposed | D．exposing |
—What about the student in your class, Mr. Wang?
—The doctor said that sleep caused him poor memory and poor concentration.
| A．lacking of | B．lacked in | C．lacking | D．lack for |
Before driving into the city, you are required to get your car ____.
| A．washed | B．wash |
| C．washing | D．to wash |