• But Amy Ramirez and Cheryl Gilman both say foreign students should understand that visa rules change often.

    VOA: special.2009.07.02

  • The ones that are accepted in public speech change through the years as social rules change.

    VOA: special.2010.02.14

  • "We have 192 countries in the framework convention on climate change and one of them wants to have separate rules,".

    VOA: standard.2009.11.04

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