——Did you hear that water in Tai Lake smelled terrible?——Yes.It ___________ because of people and factories.

题型：单选题题类：模拟题难易度：普通

——Did you hear that water in Tai Lake smelled terrible?
——Yes.It ___________ because of people and factories.

A、polluted B、was polluted C、has polluted

举一反三

I {#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} attend their wedding yesterday.

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