The country has already sent up three unmanned spacecraft, the most recent _____ at the end of last March.

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• 1The work ________ ahead of the schedule，they went to the seaside to have some fun.

  A.had been finished

  B.has finished

  C.having been finished

  D.being finished

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• 2________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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• 3Generally speaking, ______ according to the directions, the drug has no side effect.

  A.when taking

  B.when taken

  C.when to take

  D.when to be taken.

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• 4The highway ________ between Guangzhou and Nanchang is to be completed next month.

  A.is to be built

  B.to be built

  C.is being built

  D.being built

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• 5_____to sunlight for too much time, as the doctors say, will do harm to one's skin.

  A.Being exposed

  B.Having exposed

  C.Exposed

  D.After being exposed

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• 6You can't fancy what great trouble they have _______ the problem ________.

  A.to solve; being discussed

  B.solving; discussing

  C.to solve; to discuss

  D.solving; being discussed

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• 7 ______to work overtime that evening, I missed a wonderful film.

  A.Having been asked

  B.To ask

  C.Having asked

  D.To be asked

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• 8With a chicken ________ on the fire, I can't leave even for a minute.

  A.toasting

  B.toasted

  C.to be toasted

  D.being toasted

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• 9__________ to the party, Joan was hurt.

  A.Having not been invited

  B.Not having been invited

  C.Having not invited

  D.Not having invited

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• 10The little boy, ________two attempts to climb over the fence of the garden, decided to have another try.

  A.having made

  B.making

  C.made

  D.has made

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