_______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 |
Newton is known as a gifted scientist with very human weaknesses who stood at the point in history _______ magic ended and science began.
| A．that | B．when | C．where | D．which |
Researchers claim to have found the first proof _______ getting a regular eight hours a night really does make you appear healthier and more attractive.
| A．as | B．that | C．how | D．which |
Mr. Crossett was made __________ his experiment because of his poor health and old age.
| A．give up | B．giving up | C．to give up | D．given up |
It was for a lifetime of unselfish work among the sick natives ______ the old doctor deserved to be honored.
| A．who | B．that | C．which | D．whom |
At the age when many people ______ their first job, the youngsters of The Sunday Times Rich List are buying country estates or jetting off to their homes overseas.
| A．were looking for | B．have looked for | C．are looking for | D．looked for |