it's said that _____ of the water around the world ____ polluted .A.two third;has B.two thirds;have C.two third;are D.two thirds; is

it's said that _____ of the water around the world ____ polluted .A.two third;has B.two thirds;have C.two third;are D.two thirds; is
it's said that _____ of the water around the world ____ polluted .
A.two third;has B.two thirds;have C.two third;are D.two thirds; is

it's said that _____ of the water around the world ____ polluted .A.two third;has B.two thirds;have C.two third;are D.two thirds; is
选D
因为前面是two大于1,所以后面的third要加s,因为water不可数,所以三分之二的水同样不可数,用is

选D
分数的表达形式：
分子：基数词
分母：序数词
当分子=1时，分母用单数
当分子＞1时，分母用复数
water是不可数名词，所以谓语动词用单数is