是have difficulty doing sth还是have difficult doing sth?
是have difficulty doing sth还是have difficult doing sth?
have difficulty doing sth
have difficulty in doing sth
have a difficult time doing sth和have difficulty doing sth是否都
have difficulty in doing sth .have trouble in doing sth
have difficulty doing sth 还是have difficulties do
have difficulty还是difficultyies (in)doing sth?
关于have difficulty in doing sth 变形
用have difficulty in doing sth 造句
have difficulties/difficulty in doing sth?
是否有have a difficulty doing sth.It's difficult to do sth.It's
have difficulty doing sth 为什么不用 to do sth?