how to solve the problem, the little boy turned to his father for help.
A．Not knowing B．Having not known
C．Not having been known D．Not known
Nowadays people are wasting too much energy, so we should lead a low-carbon life.
, we’ll suffer a lot in the future.
A．When possible B．If any
C．If not D．Where necessary
It turned out that she won the first prize in the competition, which was her modest expectation.
A．beyond B．to C．above D．beneath
to the left, and you will see the railway station.
A．Turning B．To turn C．Turned D．Turn
I hate when people have prejudice against female employees and think women are less capable.
A．that B．it C．one D．them
It is reported that the underground system in Changsha now will be open in 2015.
A．is being built B．built C．being built D．is built
