| 31. | A . This one has the top experts scratching their heads.
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| 32. | Beijing's mixed signals have left foreigners scratching their heads.
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| 33. | There's plenty of head scratching going on in Philadelphia.
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| 34. | Taylor said, scratching his salt-and-pepper beard.
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| 35. | Piazza, scratching his head : No . And thank goodness.
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| 36. | Lisa said, scratching under Aibo's chin and cooing.
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| 37. | Even wiping a coin with a soft cloth may cause scratching.
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| 38. | "We're just scratching the surface,"
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| 39. | Or perhaps you left scratching your head at the whole thing.
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| 40. | "Didn't you hear her scratching ?"
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