It is already well understood _____ causes the global warming.

试卷相关题目

• 1 Jane was watering flowers in the garden _________ a beautiful bird caught her attention.

  A.since

  B.while

  C.when

  D.as

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• 2_____Craig loves his students, he is very strict with them in their performances.

  A.While

  B.Whenever

  C.As if

  D.The minute

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• 3—When will the visas be ready, sir?  — _____ everything goes well, you should get them in 14 workdays.

  A.Although

  B.As far as

  C.Unless

  D.As long as

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• 4Ray is a new graduate, and it seems that he has difficulty in dealing with ________ problems arise.

  A.whichever

  B.whenever

  C.whatever

  D.wherever

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• 5“Sorry” is the hardest word to say sometimes. _______ you know you've done something wrong, or something inappropriate, it takes courage to say sorry.

  A.Only if

  B.Even if

  C.If only

  D.As if

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