Iwas_____theGrandCanyon,oneofthe

发布时间：2020-07-26 20:17:07

I was _____ the Grand Canyon, one of the wonders of the natural world.A.at the edge ofB.on the edge ofC.in the edge ofD.on the edge from

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B解析on the edge of“在……边缘”，为固定短语。
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