Well, statistics show around half of Americans speak Spanish. So, the people that don't kn it have to learn a language to speak with people that don't know English. Hope this helped!
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She is using informal language, and it is appropriate because she knows the audience
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Both Human Japanese and Japanese Sensei are popular apps that contain lessons and quizzes and learning activities. FluentU and JapanesePod101 are also great resources, especially for beginners. For more dictionary options for iOS, try Midori.
Explanation:
hope this helped!