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Luyện tập tổng hợpCâu hỏi:
Mrs.Hoa (be)... a teacher of English for Twenty-eight year. She first (start)... at a small school. After she had taught there for ten years, her family (move)... to a big city. Since then, she (be) ... a teacher at a big school. She (teach) ... English very We'll and her students ( like)... learning English in her class.