-How much difficulty did you have this problem? -. Its quite easy.A. to solve Nothing B

问题补充：

-How much difficulty did you have this problem?

-. Its quite easy.

A. to solve, Nothing

B. solving; None

C. to solve, None

D. solving; Nothing

答案：

A. to solve, Nothing

(答案→)B. solving; None

C. to solve, None

D. solving; Nothing

解析：句意：你解决这个问题有多大的困难？没有。这很容易。Have difficulty doing sth做某事有困难，none没有。所以选B。