8. Scientists who study noise say that average noise level in New York is 72. 5 decibels.

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W：Hello,Mr Tompkins. Our newspaper will carry some 1    (inform) about new products. Now,will you tell us about the new home your company 2     (build) ？It promises to be a model for the houses of the future.

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 on average, in other words, concentrate on, come up with, at a disadvantage

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3. Unlike her gregarious sister,Jane is a shy,unsociable person who does not like to go to parties or to make new friends.(   )

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6. Susan's birthday party was_______ success. We sang and danced until it came to_______ end at ten.

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