AIDs is a disease that _______ the body’s  immune system.

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• 1Almost all of his time ______ experiments, he has no time to visit his parents.

  A.devoted to do

  B.devoted to doing

  C.devoting to doing

  D.is devoted to doing

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• 2—What do you think of the coming 2012 London Games? —Oh，the table tennis match is ________ to be the most exciting of it.

  A.preferred

  B.wished

  C.expected

  D.proved

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• 3But someday, all the work we have done will ____; we will go to college and go on to have a suitable job．

  A.turn down

  B.work out

  C.pay off

  D.get away

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• 4It's unfair that he _________ cheating because he's a famous author.

  A.makes use of

  B.gets away with

  C.gets rid of

  D.ends up with

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• 5____ to light for a long time, the potatoes turned green.

  A.Introduced to

  B.Exposed to

  C.Linked to

  D.Connected to

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• 6In autumn, leaves turn yellow and _________ the trees.

  A.fall out

  B.fall off

  C.fall down

  D.fall over

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