_____ many times, he finally understood it.

试卷相关题目

• 1______ around Tiananmen Square, the tourists were taken to visit the Palace Museum.

  A.Showing

  B.Havingshown

  C.Beingshown

  D.Havingbeenshown

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• 2The storm left, ______ a lot of damage to this are

  A.A.caused

  B.to cause

  C.to have caused

  D.having caused

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• 3Diana, ________ for months to find a job as a waitress, finally took a position at a local advertising agency.

  A.struggling

  B.struggled

  C.having struggled

  D.to struggle

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• 4You can imagine what great trouble they have________the problem________.

  A.to solve; being talked about

  B.solving; discussing

  C.to solve; to talk about

  D.solving; being discussed

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• 5Some people haven't realized something as common as _____ to the sun for a long time will do harm to their skin and even cause skin cancer.

  A.exposing

  B.being exposed

  C.having exposed

  D.exposed

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• 6The middle-aged woman refused to tolerate ____ a thief and said she didn't steal anything in the supermarket.

  A.calling

  B.being called

  C.to call

  D.called

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• 7_____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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• 8The 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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• 9Generally 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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• 10________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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