To succeed in a scientific experiment _____.

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• 1— My leg hurts a lot. — You'd better go to the doctor and have it _____.

  A.examine

  B.examined

  C.examining

  D.to be examined

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• 2The worst tornado of all time occurred in 1925, ______ three US states.

  A.affected

  B.affecting

  C.to affect

  D.affects

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• 3We watch the children _______ into the water from the _____ board.

  A.diving; diving

  B.diving ,dived

  C.dived; dived

  D.dived; diving

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• 4Shella forgot all about the dog and the TV set． _______  in the new magazine that had come in the mail

  A.deeply lost

  B.deeply losing

  C.was deeply lost

  D.and deeply lost

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• 5________ the sun for too much time will do great harm to you.

  A.Exposed to

  B.Being exposed to

  C.Exposing to

  D.Expose to

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• 6Every minute should be made the most of ________ our lessons well.

  A.to study

  B.studying

  C.to studying

  D.studied

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• 7Tom woke from a terrible dream ________ in another world, one that was real.

  A.just to find him

  B.just to find himself

  C.only to find him

  D.only to find himself

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• 8_______ a little money from her pocket money, Alice was able to buy her mother a lovely scarf.

  A.To save

  B.Saving

  C.Saved

  D.Having saved

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• 9No matter what I do, my efforts ________always end in failure.

  A.lose weight

  B.to lose weight

  C.losing weight

  D.lost weight

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• 10Aluminum isn't found free in nature, owing to its always ____ with other elements, most commonly with oxygen.

  A.being combined

  B.having combined

  C.combine

  D.combined

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