Wind electricity widely in many parts of the world. A. is used to produce B. is used to p

问题补充：

Wind electricity widely in many parts of the world.

A. is used to produce

B. is used to producing

C. used to produce

D. used to producing

答案：

(答案→)A. is used to produce

B. is used to producing

C. used to produce

D. used to producing

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