Not knowing his address she had some difficulty his house.A. findingB. to findC. foundD

问题补充：

Not knowing his address , she had some difficulty his house.

A. finding

B. to find

C. found

D. find

答案：

(答案→)A. finding

B. to find

C. found

D. find

解析：考查固定结构。Have some difficulty (in) doing sth.在做某事方面有一些困难。所以选A。