1.

The ruins of the spillway are a vital clue to the epic struggle that unfold as generations of Khmer engineers coped with a water system that grew complex and unruly.

A. coped with a water system that grew complex and unruly.
B. to the epic struggle that unfold as generations of Khmer engineers
C. The ruins of the spillway are a vital clue
D. No error
Answer» C. The ruins of the spillway are a vital clue


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