However much _______, it will be worth it.
| A．does the watch cost | B．costs the watch |
| C．the watch will cost | D．the watch costs |
The young man ______with honesty and won the judges in the interview, as a result, he was admitted to the foreign company.
| A．got away | B．took up |
| C．held on | D．stood out |
All work and no play makes Jack a dull boy, which suggests that work and play do not ______ but promote each other.
| A．condemn | B．convert |
| C．contradict | D．confirm |
Los Angeles Times reported that researchers may have found a way to ______ human life by changing certain genes, so that humans might expect to live twice as long.
| A．extend | B．preserve |
| C．multiply | D．transform |
A 19-year-old teenager from Guangdong nicknamed Niko demanded an apology from Youku, which he believed violated their copyrights as it used his team's photos without ______.
| A．commitment | B．approval |
| C．recognition | D．reservation |
Over the years, people have learned from ants that teamwork and perseverance are indeed two key ______ to success.
| A．certificates | B．ingredients |
| C．approaches | D．instructions |