It may be 5 or 10 years __________ it is possible for people to find a space station on the moon

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• 1— Will you go to the museum tomorrow? — Yes, I will go _______ it's windy

  A.since

  B.as though

  C.if

  D.even though

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• 2The girl arranged to have piano lessons at the training centre with her sister________she would stay for an hour

  A.where

  B.who

  C.which

  D.what

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• 3I was about to leave for work ______the telephone rang.

  A.as

  B.until

  C.while

  D.when

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• 4The head teacher will punish ______hasn't finished the homework.

  A.who

  B.whoever

  C.whomever

  D.no matter who

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• 5______ you call me to say you are not coming, I'll see you at the theatre.

  A.Until

  B.If

  C.As

  D.Unless

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• 6Some people get in touch with each other by mobile phones______ others keep contact with each other by e-mail.

  A.when

  B.before

  C.while

  D.since

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• 7--- Did he realize the serious situation immediately? --- No. It was quite a long time ______ he really realized it.

  A.now that

  B.when

  C.ever since

  D.before

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• 8______ you know, I am with my aunt and grandmother.

  A.Which

  B.As

  C.To

  D.In

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• 9You will succeed in the end ______  you give up halfway.

  A.if

  B.unless

  C.now that

  D.Until

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• 10We didn't know how we would be ________ the money had gone．

  A.before

  B.after

  C.when

  D.once

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