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last monday when i stepped into my classroom，令人伤心的一件事， mr sun，mr sun was a middle-aged teacher. he was full of sense of humour. we all liked him very much because of his excellent teaching. his lessons were usually very lively and interesting.we all liked
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
