17. You never imagine what great trouble I have ______ this paper in my house. A. found B. for finding C. to find D. finding 为何D
问题描述:
17. You never imagine what great trouble I have ______ this paper in my house.
A. found
B. for finding
C. to find
D. finding
为何D
答
have trouble in doing 是词组 做某事很困难
答
have trouble (in)doing sth