With the guide _______ the way, we finally got to the village which we were looking for
| A．led | B．leading | C．to lead | D．had led |
The conference has been held to discuss the ________of global warming on people’s lives all over the world.
| A．importance | B．effects |
| C．protection | D．impression |
— May I ask for a day off tomorrow?
—______． You know, the May Day holiday is just around the corner and every salesgirl is as busy as a bee．
| A．It’s out of the question | B．No problem |
| C．None of my business | D．I don’t care |
The girl ______ in America for years． After graduation, she returned home, quite at a loss during her hunt for a job．
| A．was studied | B．has been studied | C．studied | D．was studying |
______ is a best-known secret in success that get ready in much of our life and you may make the most of the opportunity．
| A．What | B．As | C．It | D．That |
As many successful businessmen believe, courage is as ______ to pioneering work as the intelligence, even more so．
| A．accessible | B．essential | C．alternative | D．commercial |