In your previous letter you advise that due to heavy demands the

In your previous letter you advise that due to heavy demands there is difficulty________ fulfilling the orders on hand.
A、at
B、of
C、in
D、about
【正确答案】：C
【题目解析】：【考点点击】本题在2005年4月真题第二大题29小题考查过，主要考查的知识点为介词in的用法。【要点透析】be/havedifTicullyinsth./doingsth. 表示“在某事上有困难，做某事有困难”。故本题选C项。