While the book on the top shelf , you need to be very careful .
| A．to reach | B．reaching | C．reach | D．are reaching |
Police are now searching for a woman who is reported to ________ since the flood hit the area last Friday.
| A．get lost | B．lost |
| C．be missing | D．have been missing |
Just in front of our house ________ with a history of 1,000 years.
| A．does a tall tree stand | B．a tall tree stands |
| C．a tall tree is standing | D．stands a tall tree |
They ________ the plan for almost three hours, but they haven’t reached any conclusion.
| A．discussed | B．have discussed |
| C．have been discussing | D．were discussing |
In Britain today women ________ 44% of the workforce, and nearly half the mothers with children are in paid work.
| A．build up | B．make up | C．show up | D．step up |
As the world’s population continues to grow, the ______ of food becomes more and more of a concern.
| A．worth | B．supply | C．back pack | D．list |