Color TV was first shown in 1929. It took more than two decades, ________， until 1951, for color broadcasts to begin in the US

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• 1You can eat food free in my restaurant ________ you like.

  A.whenever

  B.wherever

  C.whatever

  D.however

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• 2Eric the Red was forced to leave because he had committed a murder, ________ he got into trouble.

  A.for which

  B.where

  C.to which

  D.why

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• 3—What can I do for you? —I'd like to buy a present for my son, ______at a proper price but of great use.

  A.that

  B.the one

  C.which

  D.one

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• 4_____ I entered, he was _____ in his book and didn't notice me.

  A.When; devoted

  B.While; absorbed

  C.When, absorbed

  D.While, devoted

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• 5I will buy this type of car _____ the price is brought down to under 10,000 dollars.

  A.even if

  B.provided that

  C.unless

  D.whether

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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.while

  B.before

  C.when

  D.since

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• 7I dislike those programs ______ viewers call in to talk about their private problems.

  A.where

  B.that

  C.when

  D.which

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• 8Someone in the crowd called out his name, but he couldn't see ______.

  A.whose

  B.who

  C.where

  D.which

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• 9English is understood all over the world ______ Turkish is spoken  by only a few people outside Turkey itself．

  A.while

  B.as

  C.unless

  D.until

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• 10The film was set in a town _____ is now part of Jiangsu Province.

  A.where

  B.which

  C.what

  D.it

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