There's no way of knowing why one man makes an important discovery ________ another man, also intelligent, fails.
| A．since | B．if |
| C．as | D．while |
The manager was rushing to the airport so he______the report the secretary had typed.
| A．got through | B．glanced through | C．saw through | D．carried through |
We expected 50 people to take part, but the_____number was a lot higher.
| A．average | B．correct | C．usual | D．actual |
When asked _________ they needed most, the kids said they wanted to feel important and loved.
| A．what | B．why |
| C．whom | D．which |
_________ is known to us all is that the 2008 Olympic Games will take place in Beijing.
| A．It | B．What |
| C．As | D．Which |
The companies are working together to create _________ they hope will be the best means of transport in the 21st century.
| A．which | B．that |
| C．what | D．who |