英语智力测验1.What always goes up and never goes down?____________

英语智力测验
1.What always goes up and never goes down?
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2.why did the boy make his dog sit in the sun?
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3.what is the smallest bridge in the world?
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4.what is the difference between the North pole and the South pole?
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5.who is closer to you,your mom or your dad?
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