________ we have enough evidence，we can't win the case.
| A．Once | B．As long as | C．Unless | D．Since |
【原创】 The father, ready to retire at an early age, hoped that his eldest son would ______ the family business.
| A．take over | B．look into |
| C．take up | D．look through |
【原创】The United States is often referred to as a melting pot because its citizens come from every corner of the world with _____ cultures.
| A．universal |
| B．major |
| C．diverse |
| D．unique |
【原创】After _____ from college, he went to New York, where he started his career in the theatre.
| A．being graduated |
| B．graduated |
| C．graduating |
| D．graduate |
【原创】At the meeting, world nuclear powers are called to _____ all weapons of mass destruction, thus leaving a clean and safe world for out generation.
| A．circulate |
| B．advocate |
| C．abuse |
| D．abolish |
【原创】German President Christian Wulff announced he would _____ as the country's head of state after he was found out to have received a private loan on favorable terms.
| A．resign |
| B．compromise |
| C．undertake |
| D．swear |