in the leg made it impossible for me to walk as fast as usual.A. Having injuredB. Being in

问题补充：

in the leg made it impossible for me to walk as fast as usual.

A. Having injured

B. Being injured

C. To be injured

D. injured

答案：

A. Having injured

(答案→)B. Being injured

C. To be injured

D. injured

解析：这里用动名词作主语，必须用动名词的被动形式，故选B。