What do you think is the best way the wild animals?A. protectingB. to protectC. protectedD

问题补充：

What do you think is the best way the wild animals?

A. protecting

B. to protect

C. protected

D. protect

答案：

A. protecting

(答案→)B. to protect

C. protected

D. protect

解析：可联系答.案.网客服索取。