________ the boss entered the office, I knew troubles would follow．

试卷相关题目

• 1The bus ran into the huge stone ________ the driver could stop it．

  A.after

  B.before

  C.since

  D.until

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• 2________ the poem a second time, the meaning will become clearer to you．

  A.Your having read

  B.While reading

  C.If reading

  D.When you read

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• 3Bill Bank stayed in Pyramid Hotel ________ he was in Cairo．

  A.the last time

  B.last time

  C.a last time

  D.for the last time

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• 4Scientists say it may be five or six years ________ it is possible to test this medicine on human patients．

  A.since

  B.after

  C.before

  D.when

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• 5He laughed all the way ________ he went home．

  A.while

  B.as

  C.when

  D.before

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• 6It won't be long ________ we stand out well among the powers of the world．

  A.when

  B.before

  C.since

  D.after

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• 7________, Alexander Graham Bell was still a young man．

  A.He invented the telephone

  B.The telephone was invented

  C.His invention of the telephone

  D.When he invented the telephone

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• 8You are not to leave ________．

  A.except you are told

  B.as you are told

  C.until you will be told

  D.until you are told

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• 9Why do you want a new job ________ you have got such a good one?

  A.that

  B.where

  C.which

  D.when

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• 10Put that money somewhere safe ________ it gets stolen．

  A.before

  B.after

  C.when

  D.while

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