Gốc của sự học
PTO- Thêm một mùa thi tốt nghiệp THPT, tuyển sinh vào các trường cao đẳng, đại học; nắng nóng ngày hè dường như gay gắt, bức bối hơn trước những âu lo thấp thỏm của phụ huynh và sĩ tử.
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