摘要: such heavy pollution already, it may now be too late to clean up the river. A. Having suffered B. Suffering C. To suffer D. Suffered
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________ such heavy pollution already, it may now be too late to clean up the river.
- A.Having suffered
- B.Suffering
- C.To suffer
- D.Suffered
_____such heavy pollution already, it may now be too late to clean up the river.
A. Having suffered B. Suffering C. To suffer D. Suffered
查看习题详情和答案>>_______ such heavy pollution already, it may now be too late to clean up the river.
A. Having suffered B. Suffering C. To suffer D. Suffered
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