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河流比过去干净多了 The river is cleaner than it used to.还是The river is cleaner than it used to be

分类: 作业答案 • 2021-12-31 11:58:07

问题描述：

河流比过去干净多了 The river is cleaner than it used to.还是The river is cleaner than it used to be

答

The river is cleaner than it used to be
因为 cleaner 是形容词,需要be动词