____ is known to everybody, the moon travels round the earth once every month.
| A．It |
| B．As |
| C．That |
| D．What |
According to statistics，a man is more than twice as likely to die of skin cancer________a woman.
| A．than | B．such |
| C．so | D．as |
You did very well in all your subjects—________，you passed the midterm examination.
| A．in the end | B．after all |
| C．at the same time | D．in other words |
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 |