With the address I had no in finding Mr. White’s house.
A. troubles
B. mistakes
C. difficulty
D. difficulties、
网友回答
A. troubles
B. mistakes
(答案→)C. difficulty
D. difficulties、
解析：考查词组;have difficulty/trouble ( in) doing干…有困难，句意是：有地址我不费力的找到怀特先生的家。AD不能用复数。选C。