Every time he had a chance , he would talk about the great difficulty he had in the new co

网友回答

A. settled
(答案→)B. settling
C. to settle
D. settle
解析：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difficulty作为先行词放在前面，后面形成的定语从句，that/which指代difficulty作为had的宾语，后面使用doing的形式，故B 正确。