l was almost back at the door when l heard angry voices and arguing in my classroom.这里的arguing是作什么成分?

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• l was almost back at the door when l heard angry voices and arguing in my classroom.这里的arguing是作什么成分?
• l was almost back at the door when l heard angry voices and arguing in my classroom.这里的arguing是作什么成分?
• 求四篇寒假英语周记,字数不限,记得要写寒假,
• 已知y+z-x/x+y+z=z+x-y/y+z-x=x+y-z/z+x-y=p,请写出一组符合条件的x,y,z,p的值.请写出推算过程和验算.如果谁发现不可能的,也请证明一下.我几乎牺牲所有的积分,该式子准确来写是（y+z-x）/（x+y+z）=（z+x-y）/（y+z-x）=（x+y-z）/（z+x-y）=p可是，三楼，当y=0 z=1 x=1 p=1时 （y+z-x）/（x+y+z）的值就等于0了啊，就与P=1矛盾了。