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hoahongtuyet_168


Giup minh voi cac ban oi:
Tai sao khi cho dau an vao to giay trang thi dau an loang ra, con khi cho nuoc vao to giay thi no khong nhu vay? (Bai 12- bai thuc hanh).
cac ban giup minh chut nhe!:khi (79):
Tai sao khi cho dau an vao to giay trang thi dau an loang ra, con khi cho nuoc vao to giay thi no khong nhu vay? (Bai 12- bai thuc hanh).
cac ban giup minh chut nhe!:khi (79):
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