Latest researchers show children _______ with high levels of air pollution during their first year of life run a great risk of developing certain disease.

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• 1When first ________to Britain, tea was not so popular like today.

  A.introduced

  B.being introduced

  C.introducing

  D.having introduced

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• 2The boy is often found _____in reading books.

  A.absorbs

  B.is absorbed

  C.absorbing

  D.absorbed

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• 3____ to sunlight for three days during sports meeting, everybody got a little sunburnt.

  A.To expose

  B.Being exposed

  C.Exposing

  D.Exposed

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• 4From the dates ________ on the gold coin, we know that it was made 500 years ago.

  A.marking

  B.marked

  C.to mark

  D.to be marked

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• 5Tom looked at Jenny, with tears _____ his eyes, and shouted out the words _____ in his heart for years.

  A.filling; having been hidden

  B.filled; hidden

  C.filling; hidden

  D.filled; hiding

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• 6After completing and signing it, please return the form to us in the envelope _____.

  A.providing

  B.provided

  C.having provided

  D.provide

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• 7With thick snow _____ the ground, our city looks more beautiful.

  A.covers

  B.covering

  C.covered

  D.to cover

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• 8A cook will be immediately fired if he is found _____ in the kitchen.

  A.smoke

  B.smoking

  C.to smoke

  D.smoked

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• 9Tom worked very hard, _____ that he would be able to buy a car of his own in two years.

  A.hoped

  B.to hope

  C.hoping

  D.and hoping

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• 10He lay in bed, his eyes _____ up at the ceiling and his fingers _____.

  A.looked, crossing

  B.looking, crossing

  C.looking, crossed

  D.looked, crossed

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