. Was it __________ the conference of APEC that made Shanghai the focus of the world then?
| A．being held | B．to hold | C．holding | D．having held |
Good use___ the natural resources to improve people’s life in this area．
| A．has been made of | B．has made of |
| C．has made | D．has been made |
A great number of students said they were forced to practice the piano .
| A．to question | B．to be questioned | C．questioned | D．question |
—When shall we restart our business ?
—Not until we our plan .
| A．will finish | B．are finishing | C．are to finish | D．have finished |
When changing lanes , a driver should use his turning signal to let other drivers know .
| A．he is entering what lane | B．which lane he is entering |
| C．he is entering which lane | D．which lane is he entering |
you may have , you should gather your courage to face the challenge .
| A．However a serious problem | B．Whatever a serious problem |
| C．However serious a problem | D．No matter how a serious problem |