Oil prices have risen________32 percent since last year，________a record $84.65 a barrel on Nov.9.
| A．by；reached | B．by；reaching | C．by；to reach | D．to；reaching |
All the workers are working hard to create _____ we hope will be the best means of transport in the 21st century.
| A．what | B．where | C．which | D．that |
How I wish I _____ history when I was in university.
| A．study | B．studied | C．would study | D．had studied |
The student said there were a few points in the essay he _____ impossible to understand.
| A．had found | B．finds | C．has found | D．would find |
Mr. Smith, there is a man at _____front door who says he has _____important news for you.
A. the; anB. /; / C. the; /D /; an
The result is not very important to us, but if we do win, then so much _______.
| A．the best | B．best |
| C．better | D．the better |