Many new means__________ to prevent the river ____________.
A.have found, from polluting |
B.have found, from being polluted |
C.have been found, from being polluted |
D.has been found, from being polluted |
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Many new means__________ to prevent the river ____________.
A.have found, from polluting |
B.have found, from being polluted |
C.have been found, from being polluted |
D.has been found, from being polluted |