_____ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.
| A．Being separated | B．Having separated |
| C．Having been separated | D．To be separated |
相关试题
—I don’t suppose Jimmy could have done well in the mid-term exam last week,______?
`--- ______ he almost failed in the exam．
| A．had he; Yes | B．did he ; No | C．do I ; Yes | D．could I ; No |
It is strange that such a thing ______ in your school．
| A．will happen | B．happens | C．should happen | D．happened |
As is often pointed out, knowledge is a two-edged weapon which can be used ________ for good or evil．
| A．similarly | B．properly | C．equally | D．widely |
Urban crowdedness would be greatly relieved if fares ________ on public transport were more reasonable．
A．offere d |
B．charged | C．paid | D．spent |
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