that she’s by law old enough to get married I don’t see how you can stop her.A. Having s

问题补充：

that she’s by law old enough to get married, I don’t see how you can stop her.

A. Having seen

B. To see

C. Seeing

D. Seen

答案：

A. Having seen

B. To see

(答案→)C. Seeing

D. Seen

解析：现在分词表伴随，动作由主语发来的。