If ________, water can be changed into vapour.

试卷相关题目

• 1The man ______ there is our headmaster.

  A.stand

  B.to stand

  C.is standing

  D.standing

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• 2We realize that, ________, the situation will get worse.

  A.if not dealing with properly

  B.if not properly dealt with

  C.unless dealing with properly

  D.until properly dealt with

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• 3If we finish all of our homework as ________, we will leave for a film this evening.

  A.planned

  B.planning

  C.plan

  D.plans

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• 4________ me his e-mail address as soon as possible.

  A.To tell

  B.Do tell

  C.Telling

  D.Did tell

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• 5CLOSED DUE TO ILLNESS, ________ on the office door.

  A.the notice said

  B.said the notice

  C.were written the notice

  D.the notice wrote

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• 6All substance, ________ solid, liquids, or gases, are made up of entirely atoms.

  A.whether they

  B.whether

  C.whether are they

  D.whether are

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• 7Most green vegetables, ________ for too long, will lose their nutrition.

  A.if to be cooked

  B.if being cooked

  C.if cooking

  D.if cooked

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• 8The climate in Beijing is colder than ________ in winter.

  A.Shanghai

  B.the climate in Shanghai

  C.that of Shanghai

  D.in Shanghai

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• 9________ a reply from his friend, he decided to write to her again.

  A.Received

  B.Not received

  C.Not having received

  D.Having not received

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• 10________ more attention, the trees could have grown better.

  A.If given

  B.To be given

  C.While being given

  D.If giving

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