We have to study for a bright future, so we have to lose some sleep_________we're worn out.

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• 1It was not _____ she took off her glasses _____ I realized she was a famous film star.　　

  A.when , that 　

  B.until , that

  C.until , that

  D.when , then

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• 2-----Did your boss phone you again the next day? -----No, it was a week __________ he gave me a second call.

  A.that

  B.when

  C.before

  D.after

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• 3The worker hunted for jobs in New York for months,_______ he could not find any work.

  A.and

  B.yet

  C.or

  D.and but

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• 4Where have you been _______ you left home?            

  A.before

  B.as

  C.since

  D.when

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• 5— I phoned you at about three this afternoon, but no one answered. — Oh, that was probably _______ I was doing exercise outdoors.

  A.when

  B.why

  C.what

  D.that

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• 6 We were to go out for a walk ________ it began to rain.

  A.while

  B.before

  C.as

  D.when

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• 7Worldwide markets get tighter and the pain only lasts longer ______ international cooperation is strengthened in no time.

  A.because

  B.if

  C.unless

  D.when

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• 8She thought I was talking about her daughter，______，in fact，I was talking about my daughter．

  A.whom

  B.where

  C.which

  D.while

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• 9I don't know _______ to stay at home or go out.        

  A.whether

  B.if

  C.how

  D.where

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• 10Which is bigger, the sun _________ the moon?

  A.or

  B.and

  C.but

  D.so

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