Everyone here will thank the firefighter for the things they have done to prevent fires______the environment safer.

试卷相关题目

• 1All flights _______ because of the storm, they had to wait in the hall.

  A.have put off

  B.were put off

  C.have been put off

  D.having been put off

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• 2The railway bridge ___________ by 2015 will provide a faster route to transport goods．

  A.to be completed

  B.is completed

  C.completed

  D.being completed

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• 3After a long absence, I went back to college, ______ to pick up where I'd left off．

  A.hoping

  B.hope

  C.to hope

  D.hoped

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• 4 _______ by beautiful green mountains and situated at the foot of Huangshan Mountain makes Tai Ping Lake a famous tourist attraction.

  A.Surrounded

  B.Being surrounded

  C.Having been surrounded

  D.Surrounding

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• 5The mother, ________ in the kitchen, totally forgot the medicine on the table within the child's reach.

  A.occupied

  B.to be occupied

  C.occupying

  D.being occupied

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• 6The dangerous virus _______ in the next few weeks in the laboratory can cause fatal diseases.

  A.studying

  B.studied

  C.to study

  D.to be studied

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• 7_____ in Paris, the Louvre is one of the world's largest art galleries.

  A.Locating

  B.Located

  C.Having been located

  D.Being located

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• 8________ from the top, the city looks more beautiful.

  A.To see

  B.Seeing

  C.Seen

  D.See

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• 9We know such people are not _______ .

  A.to rely on

  B.to be relied upon

  C.to be relied

  D.to rely upon

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• 10When ____about his family, he is always refusing to answer.

  A.asked

  B.asking

  C.being asked

  D.mentioned

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