题目内容：
16. Mike promised to keep me ______ how our business was going on.
(A) informed
(B) informed of
(C) to be informed
(D) to be informed of
参考答案：
选择题：16.Mike promised to keep me ______ how our busines
- 题目分类：郑州工程技术学院-大学英语（2）.
- 题目类型：选择题
- 查看权限：VIP
Mike promised to keep me ______ how our business was going on.
(A) informed
(B) informed of
(C) to be informed
(D) to be informed of