1、what’s the color of pen?pen可以放在of后面吗?如不可以,of后面要加什么?

what's the p( )of this pen The color of her pen is black. 请问“钢笔的颜色”是"the color of the pen“还是”color of the pen"还是“the c This is( )good pen ( )color of the"W"is biack what size后面可以不加of吗? One of the boys 后面的come加s吗? What the color of get in the way of of后面加什么 如题.half of 后面加什么词?名词和代词都可以吗? what's the color of y____ ruler What’s the nature of color? both of 后面可以加名词复数,那both of the后面呢,只能加单数吗?