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29. New ways _____ to prevent the river _____.
A. have found out, from polluting
B. have found, from being polluted
C. have been found out, from being polluted
D. have been found, from being polluted
查看习题详情和答案>>New ways _____ to prevent the river _____.
A. have found out, from polluting
B. have found, from being polluted
C. have been found out, from being polluted
D. have been found, from being polluted
查看习题详情和答案>>29. New ways _____ to prevent the river _____.
A. have found out, from polluting
B. have found, from being polluted
C. have been found out, from being polluted
D. have been found, from being polluted
查看习题详情和答案>>New ways _____ to prevent the river _____.
|
A．have found out, from polluting |
|
B．have found, from being polluted |
|
C．have been found out, from being polluted |
|
D．have been found, from being polluted |
查看习题详情和答案>>