单选题 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】[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意为“让某人一直做某事”，与题意不符；keep sb. informed of sth. 意为“随时向(某人)报告某事”。故选C。