ban oi sao minh ko sua dc nhu ban noi, lam xong het rui. vo choi ban fe4 tieng nhat cung ko dc,trong khi minh dua duong dan vao ban fe4 tieng nhat, luc vo choi van chi so nhu cu chang thay doi.Hay la minh phai choi ban tieng Anh, ban biet plss chi minh voi. thanks ,hay ban lam thu fe4 cho a e...