Every possible means_____ been tried，and we find only______ this means can we do it well．
| A．have，in | B．have，by |
| C．has，in | D．has，by |
that Marie was able to set up new branches elsewhere.
| A．So successful her business was | B．So successful was her business |
| C．So her business was successful | D．So was her successful business |
35. So mysteriously ______ missing that many puzzles wait to be solved.
| A．did Flight MH370 go | B．Flight MH370 went |
| C．does Flight MH370 go | D．had Flight MH370 gone |
30. , and you will realize your dream of being successful.
| A．Making great efforts | B．To make your efforts |
| C．A bit more effort | D．If you double your efforts |
—Who should be responsible for the accident?
—The boss, not the workers.They just carried out the order.
| A．as told | B．as are told | C．as telling | D．as they told |
29. — When is he willing to lend his friends some money?
— Only when ______ hard enough.
| A．to press | B．pressed | C．pressing | D．is pressed |