Question

Do you have any ________ out the problem?

1. A.
   difficulty in working
2. B.
   difficulty to work
3. C.
   difficulties working
4. D.
   difficulties to work

Answer 1

A
解析：
have difficulty in doing sth．意为“干某事有困难”，是固定结构，其中difficulty是不可数名词，后面的介词in可省略。