Do you know we have much difficulty the work on time.. A. on finishing B. finishing C. t

问题补充：

Do you know we have much difficulty the work on time..

A. on finishing

B. finishing

C. to finish

D. at finishing

答案：

A. on finishing

(答案→)B. finishing

C. to finish

D. at finishing

解析：考查固定短语在不同语境中的应用。have ….(much /great/little/…)difficulty （in）doing sth 意为“做…有….的困难”。题意为：你知道我们完成这项工作有很多的困难吗?故选B。