_______twice, he didn't want to try again.
| A．Failed | B．Failing |
| C．Having failed | D．To fail |
—Look! Somebody _____ the sofa.
—Well, it wasn’t me. I didn’t do it.
| A．is cleaning | B．was cleaning |
| C．has cleaned | D．had cleaned |
The success of a government should be measured ____ the health and happiness of the people as well as the development of the economy.
| A．in face of | B．in place of | C．in terms of | D．in line with |
According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.
| A．differ | B．shrink | C．fail | D．decline |
You can’t predict everything. Often things don’t_____ as you expect.
| A．run out | B．break out | C．work out | D．put out |
The young dancers looked so charming in their beautiful clothes that we took _____pictures.
| A．many of | B．a large amount of |
| C．a plenty of | D．masses of |