At the United Nations Climate Change Conference, the UN Secretary General pointed out that, ______, the climate situation would get worse and worse.

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• 1_____ our national football team lost the game to a weak team as Syria by 2 to 3, I held no doubt about the new coach's ability.

  A.Until

  B.By the time

  C.Unless

  D.After

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• 2_____ I'm mistaken, I've seen that tall man at a party before.

  A.If

  B.As

  C.Unless

  D.When

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• 3Try _____ she might, Sue couldn't get the door open.

  A.if

  B.when

  C.since

  D.as

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• 4All the dishes in this menu, _____ otherwise stated, will serve two to three people.

  A.as

  B.if

  C.though

  D.unless

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• 5Please tell him it is time for the meeting and _____ all the workers are waiting.

  A.that

  B.what

  C./

  D.where

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• 6You are supposed to read your article carefully and get it polished _____ you submit it.

  A.until

  B.when

  C.before

  D.after

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• 7My parents were quarrelling about me ____ I could not quite tell why.

  A.since

  B.though

  C.if

  D.until

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• 8Why not stay at home _____ the road is so slippery after the heavy snow?

  A.since that

  B.after that

  C.then that

  D.now that

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• 9Don't promise anything _____ you are one hundred percent sure.

  A.whether

  B.after

  C.how

  D.unless

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• 10_____ regular exercise is very important, it's never a good idea to exercise too close to bedtime.

  A.It

  B.As

  C.Although

  D.Unless

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