问题描述：
(1/2)Dear teacher,I'm sorry,we were wrong.We should not let you so sad and disappointed.Please...
(1/2)Dear teacher,I'm sorry,we were wrong.We should not let you so sad and disappointed.Please forgive us this time.We won't make such a stupid mistake.I ho
(1/2)Dear teacher,I'm sorry,we were wrong.We should not let you so sad and disappointed.Please forgive us this time.We won't make such a stupid mistake.I ho
问题解答：
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