If people keep polluting the rivers, no fish there will survive ______.
| A．at all costs | B．once in a while |
| C．in the long run | D．by no means |
He held out his hand, but the lady refused to take it, which made him feel very _________.
| A．awkward | B．comfortable |
| C．cheerful | D．curious |
Due to lack of protection, the hills which used to be covered withgreen trees are now mostly _________
A. blankB. bare
C. vacantD, hollow
It is generally agreed _________ education is vital for the development of individuals and the well-being of society.
| A．if | B．because |
| C．when | D．that |
George is _________ a very serious man, but as a matter of fact he has a great sense of humour.
| A．obviously | B．absolutely |
| C．apparently | D．occasionally |
He has learned to get on with all kinds of people and _________ todifferent ways of life.
| A．addict | B．agree |
| C．add | D．adjust |