. _______of the household rubbish _______recycled or reused since the new technology was applied.
| A．Three-fourth; has | B．Three-fourth; have been |
| C．Three-fourths; has been | D．Three-fourths; have |
_____ people are generally better off, the gap between the rich and the poor has widened.
| A．Despite | B．Whereas | C．However | D．Although |
In most countries, urban population is ____ while the population of German ___ by 8 percent.
| A．raise; decrease | B．increase; on the decrease |
| C．on the increase; decreases | D．rise; on the decrease |
I finally had to _____ the subject of payment.
| A．bring up | B．pick up | C．turn up | D．brighten up |
There is something wrong with my washing machine and it requires _____.
| A．repairing | B．to repair | C．being repaired | D．having repaired |
We walked a long way to see him off, only _____ that he had just left.
| A．found | B．to find | C．finding | D．having found |