问题
选择题
Some factories _________ dirty water _________ rivers. [ ]
A. make…into
B. go…into
C. pure…into
D. pure…down
答案
答案：C
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Some factories _________ dirty water _________ rivers. [ ]
A. make…into
B. go…into
C. pure…into
D. pure…down
答案：C
