School kids take part in parades on campus on Halloween, __________ in colorful costumes, after whic

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• --- I regret ________ you that John has been fired. --- I can hardly believe my ears. He is such a f
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• ___________ that he was in great danger, Eric walked deeper into the forest．A．Not realizedB．Not to r
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• Today we have chat rooms, text messaging, emailing… but we seem ________the art of communicating fac
• When the farmers were asked to leave their hometown, they said they would rather______ than ______ t
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• 分式和的最简公分母为（）。-八年级数学
• 先化简，再求值。，其中x=-2009。-九年级数学
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• 先化简，再求值：，其中x=。-九年级数学
• 先化简，再求值：，其中，。-九年级数学
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• 先化简，再求值：，其中。-九年级数学
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• 先化简，再求值：，其中a=-1。-八年级数学
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• 先化简，再求值：，其中x=3。-九年级数学
• 先化简，再求值：，其中x=3，y=-。-九年级数学
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• 先化简，再求值：，其中。-九年级数学
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• 化简：的结果是[]A、B、C、-D、--八年级数学
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