have difficulty in sth对吗
have difficulty in sth in可以省略吗
have difficulty in sth.
have difficulty in sth错了吗
have difficulty doing用单数还是复数
have difficulty to do还是doing
have difficulty with和in的区别
have difficulties in doing sth
have sth in common是什么意思
have difficulty doing sth
have difficulty in doing sth
have a talent for还是in
have sth in common造句
have trouble (in) doing sth