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

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• 1The country has already sent up three unmanned spacecraft, the most recent _____ at the end of last March.

  A.has been launched

  B.having been launched

  C.being launched

  D.to be launched

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• 2The 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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• 3________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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• 4Generally 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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• 5The 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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• 6 ______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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• 7With 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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• 8__________ 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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• 9The 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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• 10______ a little money, Jane was able to buy her mother a lovely new watch.

  A.To save

  B.Saving

  C.Saved

  D.Having saved

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