填空题 I would like to see if we can, by _____ these comments, restore their roughness of surface and make them useful again. (highlight)无
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【正确答案】 1、highlighting    
【答案解析】句意: 我想试一下, 通过强调这些评论, 能否恢复它们的本来面目, 让它们再次变得有用。 by是介词, 表示“以……方式” , 后面接v-ing形式。