where should we put the chairs?
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你能帮帮他们吗
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_______ his father_______ his mother are a teacher. They are in the same school.
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Tourists can choose to visit Kunming ______ they like-spring, summer, autumn or winter.
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将下面的文言文句子翻译成现代汉语。 (1)大将军平素与江州如何,而汝欲归之? (2)子子孙孙无穷匮也,而山不加增,何苦而不平?
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已知tana/(tana-1)=-1,则sin^2a+sinacosa+2= 为什么知道tana=1/2就知道sina与cosa的值了?
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脑筋急转弯:what has many keys,but cannot ever open a single door
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