By________ the heart ________a pump, he helped the children to understand its function.

试卷相关题目

• 1Though English is hard ________, you should still do everything you ________ it well.

  A.to be learned; can study

  B.to be learned; can to study

  C.to learn; can study

  D.to learn; can to study

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• 2We followed him ________ the forest.

  A.to go to

  B.to come to

  C.going to

  D.to

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• 3Nobody can stop him ________ the experiment.

  A.to do

  B.doing

  C.do

  D.done

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• 4I enjoy listening to the songs _______by ourselves.

  A.sung

  B.sing

  C.was sung

  D.singing

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• 5Fish in this river are not safe ________.

  A.to eat

  B.to be eaten

  C.eat

  D.eating

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• 6______ money, his parents couldn't send him to university.

  A.Lacked

  B.Lacking of

  C.For lack of

  D.Lacked in

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• 7The name of Nebraska comes from an Indian word, ________ flat water.

  A.to mean

  B.meaning

  C.it means

  D.by meaning

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• 8The teacher went into the classroom, ________ the five boys ________ in the rain．

  A.left; standing

  B.leaving; standing

  C.left; stood

  D.leaving; stood

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• 9He was considered ________ a model teacher.

  A.be

  B.being

  C.to be

  D.will be

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• 10It's already 8 o'clock,the bell is ringing,we must stop ______.

  A.to play

  B.to playing

  C.playing

  D.and play

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