--What made Kate so excited yesterday?
-- by her boss, as far as I know.
A. Being praised
B. Praised
C. To praise
D. She was praised
网友回答
(答案→)A. Being praised
B. Praised
C. To praise
D. She was praised
解析：句意:——是什么让凯特昨天这么兴奋? ——据我所知是被她的老板称赞是她这么兴奋。句子缺少主语，根据句意表示被称赞，因此选being praised 动名词的被动形式。Praised 表示被动，不能作主语；To praise 可以作主语，但是主动形式，与题意不符； She was praised意思符合，应写成主语从句，在she前加that，构成主语从句即可。因此选A。