--- Have you finished your homework?
--- No, I ______ my father on the farm all day yesterday.
| A．was helping | B．am helping |
| C．have helped | D．helped |
Once e-mail learners _______ with the basic knowledge of how to use the network, they ______ to a local network and a global network.
| A．are equipped … will be linked | B．are equipping…will be linked |
| C．are equipped … will link | D．will be equipped…will be linked |
Yuan Longping, known as the “father of hybrid rice”, doesn’t care about money or about ____ people call position.
| A．that | B．such | C．what | D．which |
Charles Darwin, a young man just out of university, knew perfect well that he had to depend on _____ when he set out on a voyage of discovery around the world.
| A．him | B．himself | C．themselves | D．them |
It was for his excellent work _____he had done lately ____ he was awarded the Nobel Prize for Physics.
| A．that… which | B．which … which | C．that… / | D．that … that |
The impact of Einstein’s breakthrough in the field of photo electric effect ____ the understanding of the universe was simply tremendous.
| A．in | B．on | C．with | D．about |