选D
分数的表示方法 三分之二 分母需要用复数形式 所以是two thirds
但水是不可数名词, 而且是被污染用被动语态, 故 is polluted
it's said that --- of the water around the world --- polluted
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
请说明理由好吗?
a\ two third ; has
b\ two thirds ; have
c\ two third ; are
d\ two thirds ; is
请说明理由好吗?
英语人气：929 ℃时间：2019-09-29 06:07:32
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