_______ you sit in front of the computer all day while working, you'd better take exercise for at least an hour every day.

试卷相关题目

• 1______ a bad habit is formed, it will take a long time to get rid of it．

  A.Ever since

  B.While

  C.Once

  D.Even if

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• 2The athlete seldom wears anything other than sportswear ______the season is.

  A.wherever

  B.whenever

  C.however

  D.whatever

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• 3________ the boss has arrived, let's begin our discussion right away.

  A.If

  B.When

  C.Now that

  D.Even if

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• 4Reality is not the way you wish things to be, nor the way they appear to be, _________ the way they actually are.

  A.as

  B.or

  C.but

  D.and

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• 5He knew that cholera would never be controlled _____ its cause was found.

  A.till

  B.still

  C.until

  D.kill

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• 6It's going to be some time _____ he sees his father again, _____ business has just been started in Switzerland．

  A.after; who

  B.before; whose

  C.when; whose

  D.since; who

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• 7Professor Tang didn't give us a speech today．It was ______ he had a traffic accident on the way to school．

  A.that

  B.when

  C.why

  D.because

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• 8It wasn't such a good present ______ my cousin had promised me.

  A.that

  B.as

  C.which

  D.what

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• 9Bill Gates has created a wonderful “window”, ______ people can surf the Internet freely.

  A.that

  B.which

  C.where

  D.when

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• 10We were having a meeting _________ suddenly someone knocked at the door.

  A.because

  B.when

  C.as

  D.while

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