In the US, the groceries shops are randomly selected,
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送交者: steven 于 2009-11-21, 16:59:21:
回答: 那不行！比如你就是那个卖raw material的，可以在卖之前偷偷作下了手脚 由 为何偏偏喜欢你 于 2009-11-21, 16:25:58:
and the shopping sites are classified. The Secrete Service then sends its agents in plain cloth to shop. However, I do not know the details about the arrangement for official banquet in other nations.
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