This kind of bird is and we should do what we can to it.A. dangerous saveB. endangerin

问题补充：

This kind of bird is , and we should do what we can to it.

A. dangerous, save

B. endangering, protect

C. in dangers, save

D. in danger, protect

答案：

A. dangerous, save

B. endangering, protect

C. in dangers, save

(答案→)D. in danger, protect

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