He asked us to him carrying through their plan.
A. assist; with
B. help; to
C. assist; in
D. help; with
网友回答
A. assist; with
B. help; to
(答案→)C. assist; in
D. help; with
解析：本题的关键词是第二空后的carrying,这是一个动名词形式。不存在assist sb with doing sth和help sb with doing sth的结构。只有help sb to do sth/ assist sb in doing sth帮助某人做某事；句义：他请求我们帮助他完成他们的计划。Carrying说明前面应该使用介词in，故C正确。