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When I was in the USA,I had difficulty ______ English, so I often ask Paul ____ help.
A.to understand, withB.understanding, for
C.to understand, forD.understanding, with
答案:B
试题分析:句意:当我在美国的时候,我在理解英语上有些困难,因此我经常向Paul求助。第一个空使用的句型是have difficulty doing sth.做某事有困难,因此第一个空应该用动名词形式;第二个空是短语ask sb. for help向某人求助。故选B。
考点:考查动名词和介词。