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当X________时分式3X分之2有意义 说说 并举个例子
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你能帮帮他们吗
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Tim, don't________ the chance. It is a road to your dream. A.fix up B.warm up C.give up D.look up
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much, have, every, homework, I, day
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It’s time to say goodbye to my school. I’ll always remember the people _______ have helped me.
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Please call my secretary to arrange a meeting this afternoon, or ________ it is convenient to you.
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