If we had taken such effective much earlier, the river would not be polluted so seriousl

发布时间：2020-08-16 14:33:20

If we had taken such effective      much earlier, the river would not be polluted           so seriously now.
A. treasures
B. efforts
C. measures
D. actions

网友回答

A. treasures
B. efforts
(答案→)C. measures
D. actions
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