I _________ you, but I was busy all the time yesterday afternoon.
| A．could help | B．had helped | C．helped | D．could have helped |
At this rate, the forest will be completely _______________ within the next 30 years．
| A．damaged | B．ruined | C．spoiled | D．destroyed |
The health official said ______ 12 suspected cases of influenza A (H1N1) were tested negative and ______, so far, this city has reported no case of the virus.
| A．what; that | B．that; what | C．不填; that | D．that; 不填 |
—Hi, Johnson, any idea where Susan is?
—It’s class time, so she ______ in the classroom now.
| A．can be | B．must have been | C．might have been | D．should be |
We firmly believe that war never settles anything. It only _____ violence.
| A．runs into | B．comes from | C．results in | D．begins with |
___ the high price, demand for these cars is very high.
| A．Because of | B．In spite of | C．In case of | D．due to |