Tom kept quiet about the accident ________ lose his job.
| A．so not as to | B．so as not to | C．so as to not | D．not so as to |
_______ many times , he still couldn’t understand it．
| A．Told | B．Having been told |
| C．He was told | D．Though he had been told |
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
We offered these students a summer course , aimed _____ improving their spoken English．
| A．to | B．in | C．at | D．for |
England is rather short of arable land , so it is absolutely dependent upon other countries for her food __________．
| A．offers | B．stores | C．supplies | D．sales |
The young man insisted that he _______ nothing wrong and ________ free．
| A．did , set | B．had done , should be set |
| C．do , be set | D．had done , must be set |