Hoidap247

Hoidap247.com is a community for asking and answering exercises in all subjects and classes for high school students across Vietnam. Users can submit questions in the subjects Mathematics, Physics, Chemistry, Biology, History, Geography, Literature, English, Technology, Informatics, Citizenship Education, Music and Fine Arts... from grades 1 to 12 completely free.

Website: hoidap247.com

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Hoidap247

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