in the leg the bird let out a cry of pain asking for help. A. Being shotB. Having been

问题补充：

in the leg, the bird let out a cry of pain asking for help.

A. Being shot

B. Having been shot

C. To be shot

D. Shooting

答案：

A. Being shot

(答案→)B. Having been shot

C. To be shot

D. Shooting

解析：shoot为及物动词,意思为 “射伤;射中”。 shoot与the bird为被动关系，且shoot动作先于let out动作，故用动词ing形式的完成式作状语，表示原因。A：表示进行的被动动作；C：位于句首做目的状语，不合题意。