2019年mpacc考试英语真题——介词和介词短语1057

{01}You must keep us ______ of how things are going here.
A.informing
B.informed
C.inform
D.to inform
解析：试题分析：考查固定搭配。inform sb of sth通知某人某事；inform sb to do sth/that通知某人做某事；keep sb informed of sth让某人知晓......。句意：你必须让我们知晓事情的发展状况。故选B。
考点：考查固定搭配
本题选B。