have difficulty doing sth 为什么不用 to do sth?

have difficulty 后跟什么? have difficulty gainning have difficulty in You can`t imagine what difficuitly we had______ home in snowstorm.A.walked B.walk C.to walk D.walking老师说用have difficulty doing sth的语法,故选D 可我看见句子要求用的语法中没按照顺序来,我的意思是 have difficulty doin have difficulty with sth 对么 .have some difficulty or difficulties? 用have difficulty doing 造句 have difficulty on sth对吗是不是have difficulty in doing sth,have difficulty on sth have difficulty with sth中difficulty要不要遍复数? have some difficulty (in) doing sth.中的 difficulty可数吗 have some difficulties还是difficulty in have difficulties/difficulty in doing sth? 关于have difficulty in doing sth 变形 用have difficulty in doing sth 造句 have difficulty doing sth 还是have difficulties dohave difficulty doing sth 还是have difficulties doing sth （高二英语）have difficulty with/without sth 的意思have difficulty with sthhave difficulty without sthwith和without 请问一下have throuble、 have difficulty 、have problem的用法请问一下have throuble have difficulty have problem的用法, have difficulty in sth和have difficulty with sth 一样么?