KOS English center la mot trong nhung don vi dan dau trong viec thiet ke cac khoa hoc luyen giao tiep, Ielts chuyen sau, captoc theo mo hinh 1-1, 1-4, 1-6, 1-10 tai Ha Noi. Chia se kien thuc hoc luyen Ielts cap toc cho nguoi co nhu cau thi ielts va cam ket dau ra luyen thi Ielts tại KOS

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