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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

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A．Have you studied	B．Did you study
C．Had you studied	D．Do you study

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You ______ television.Why not do something more active?

A．always watch	B．are always watching
C．have always watched	D．have always been watching

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“I thought you might have got drunk.” “Yes, I ______.”

A．almost have	B．almost had
C．almost did	D．might have

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A．has been	B．had been
C．was	D．will be

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“I suppose you _____ that report yet?” “I finished it yesterday, as a matter of fact.”

A．didn’t finish	B．haven’t finished
C．hadn’t finished	D．wasn’t finishing

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