--How are your business goes wrong?
---But I have done all that is __ by law.
| A．required | B．judged | C．requested | D．desired |
Don’t let the chance slip away! I can __________ you that my investments will double your income within no more than one year.
| A．possess | B．sponsor |
| C．instruct | D．guarantee |
All work and no play makes Jack a dull boy, which suggests that work and play do not _________ but promote each other.
| A．conduct | B．convey |
| 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．appreciation | B．approval |
| C．assistance | D．assessment |
The lower production levels are a _________ of dissatisfaction among the workers, so it’s time to raise their salary.
| A．symptom | B．recognition |
| C．potential | D．tendency |