问题补充:
–Do you have some trouble the problem? Do you need some help?
--No, thank you. I can make it myself.
A. solve
B. solving
C. to solve
D. solved
答案:
A. solve
(答案→)B. solving
C. to solve
D. solved
解析:have some trouble in doing sth,表示在做某些事方面有困难,故选答案为B