His eyesight is poor and he has diffiulty () seeing the words on the wall A of B in C from D on
问题描述：
His eyesight is poor and he has diffiulty () seeing the words on the wall A of B in C from D on
答
B
have/has difficulty in （doing） sth在.......方面有困难
固定搭配
答
in
词组 have difficulty in doing something 在做 上有困难。
答
B in
have difficulty in doing something 对…有困难,做某事有困难