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      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

_______ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

_______ 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

_________ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

 _____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