是swimming through 还是swimming across?

是swimming through 还是swimming across? 是Do they like swimming,还是Does they like swimming? 去游泳是go swimming还是going swimming such as swimming的swimming是动词还是名词 through是动词还是介词? go swimming是名词还是动词 Swimming,shopping是动词还是名词 是swim team 还是swimming team? walk through 是敷衍 , 还是work through 是敷衍 look through 中的through 是 副词还是介词 to walk through the woods.through是副词还是介词, walk acrossthe street还是through?可是答案是through.... through还是 cross the city是through吧~ 过河是go through还是go across 穿过沙漠是用across还是through? swimming club 中的swimming 是动名词 还是现在分词 为什么不是现在分词呢 求详解 some boys ______in the lake.应该填什么,是填are swimming还是 swimming 英语翻译The salmon that are left keep swimming.中的 left keep swimming 还有 swimming 是 be （are） swimming还是其他的语法要求呢?