All their attempts to rescue the child from the burning building were ______．He dies soon afterwards．
A．in place B．in return C．in vain D, for
—How can we _________ a large amount of fruit in the summer?
—By freezing or bottling.
| A．deserve | B．reserve |
| C．preserve | D．observe |
There's a strong possibility _________he'll get promoted. If so, let'scongratulate him.
| A．whether | B．if |
| C．that | D．which |
_________ so busy, she would come to help you.
| A．Should my daughter | B．Was my daughter not |
| C．If my daughter were not | D．If my daughter isn't |
Without the air to hold some of the sun's heat, the earth at night _________，too cold for us to live.
| A．would be coldly freezing | B．would be freezing cold |
| C．would be frozen cold | D．will freeze coldly |
_________his teacher, Li Ming wouldn't have passed the Englishexam so easily.
| A．If it hadn't been | B．Hadn't it been |
| C．Had it not been for | D．Were it not for |