【题目】 The difficulty which we had _______ with the local people has now been removed.
A. communication B. to communicate C. communicated D. communicating
在线课程【答案】D
【解析】试题分析：考查固定结构，固定结构：have some difficulty (in) doing sth做某事有困难。本题把the difficulty提前，后面使用定语从句，which指代先行词the difficulty在句中作为had的宾语，后面使用doing的形式。故D正确。