Jim' s job is to keep his boss______of the latest development of that product in Europe.
【正确答案】 C
【答案解析】根据句意可知，his boss和inform为逻辑上的动宾关系，所以应用inform的过去分词形式。keep sb．doing sth．意为“让某人一直做某事”，不符合题意。故选C。