The problem is so complex that I'm afraid it will take me several hours to________．

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• 1—Have you heard that George quit his job? —Yeah, but I can't________why he did so.

  A.put out　

  B.figure out

  C.carry out　

  D.send out

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• 2As the world's population continues to grow，the ________ of food becomes more and more of a concern.

  A.worth

  B.supply

  C.package

  D.list

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• 3Eye doctors recommend that a child's first eye exam ________ at the age of six months old.

  A.was

  B.be

  C.were

  D.is

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• 4Briggs will ________as general manager when Mitchell retires.

  A.get away

  B.take over

  C.set off

  D.run out

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• 5My uncle invited me to spend the Spring Festival with him in Shanghai, but _______ I'd prefer to go on a tour in Hainan.

  A.logically

  B.personally

  C.regularly

  D.totally

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• 6Two years ago, she bought an expensive mountain bike and then she persuaded me to buy _______.

  A.this

  B.that

  C.it

  D.one

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• 7_____ we have enough evidence, we can't win the case.

  A.Once

  B.As long as

  C.Unless

  D.Since

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• 8After several sleepless nights, Mr. Smith ______ a perfect solution to the financial problems of his company.

  A.kept up with

  B.put up with

  C.came up with

  D.ended up with

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• 9--- I need to advertise for a roommate for next term. --- _______？Mary is interested.

  A.Why bother

  B.Why not

  C.So what

  D.What for

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• 10We are sparing no efforts to create _____ more peaceful and more advanced world, ____ place where everyone enjoys his life and freedom.

  A.a; a

  B./; the

  C.the; a

  D.the; the

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