If we some measures, we might have prevented the environmental pollution.A. takeB. had tak

发布时间：2020-08-16 14:19:11

If  we     some measures, we might have prevented the environmental pollution.
A. take
B. had taken
C. took
D. have taken

网友回答

A. take
(答案→)B. had taken
C. took
D. have taken
解析：考查时态。句意：我们已经采取了措施，我们应该能阻止环境污染。条件从句中是对过去已完成动作的假设，故用过去完成时态，选B。
以上问题属网友观点，不代表本站立场，仅供参考！