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We must do something to stop factories waste water into the river before it is c

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We must do something to stop factories waste water into the river before it is c

We must do something to stop factories ________ waste water into the river before it is cleaned．

[]

A．pouring

B．to pour

C．poured

D．being poured

试题答案

答案：A

标签：factoriesstopwasteintowater

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