Man must keep in mind that it will be years ______ the earth recovers from the damage he makes to it.

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• 1It is _____ English is being widely used at present _____ we learn it hard.       

  A.because; why

  B.because; that

  C.since; why

  D.since; that

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• 2We hadn't met for 20 years, but I recognized her________I saw her.     

  A.for the moment

  B.the moment

  C.the moment when

  D.at the moment that

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• 3— The warranty(保修) on these phones is one year. _____I am covered if it broken? —  That's right. _____ it's damaged.   

  A.And; If

  B.So; Unless

  C.But; Before

  D.For; When

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• 4— How long do you think it will be _______ the USA recovers from the losses of the financial crisis?— Perhaps four or five years.  

  A.when

  B.since

  C.that

  D.before

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• 5I went home ______ I had finished my work.

  A.instant

  B.the instant

  C.moment

  D.as soon

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• 6Many students didn't realize the importance of study _______ they left school.

  A.when

  B.until

  C.after

  D.unless

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• 7He will surely finish the job on time___________he's left to do it in his own way.

  A.in that

  B.as far as

  C.in case

  D.so long as

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• 8Viewers continue to watch TV ____ they complain about the quality of the programming.

  A.even though

  B.as if

  C.as long as

  D.unless

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• 9 ______ the Smiths will come or not is ______ she is worrying about.

  A.What; that

  B.Whether; what

  C.If; that

  D.How; which

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• 10How did your brother make such a stupid mistake ______ he had a such a good knowledge of the steps and cautions over operating the machine.

  A.when

  B.because

  C.while

  D.that

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