Penicillin became the greatest drug of the 20th century, without ______ many people ______ from sickness or even small wounds.
| A．it, died | B．which, have died |
| C．which, would have died | D．it, would have died |
The athlete's years of hard training __________ when she finally won the Olympic gold medal.
| A．went on | B．got through |
| C．paid off | D．ended up |
Staying in hospital and taking special medicines __________ drug users an opportunity to stay away from drugs, which is __________ the key to breaking the addiction to drugs lies.
| A．serves; where | B．provides; what |
| C．give; that | D．allow; where |
Staying in hospital and taking special medicines __________ drug users an opportun It is illegal for a public official to ask people for gifts or money __________ favors to them.
| A．in preference to | B．in place of |
| C．in agreement with | D．in exchange for |
John has really got the job because he showed me the official letter __________ him it.
| A．offered | B．offering |
| C．to offer | D．to be offered |
People like to shop in the supermarket because they are interested in the __________ of goods on offer and can buy whatever they want.
| A．price | B．variety |
| C．value | D．amount |