问题补充：
The actor pretends to be a fierce, bold man, but he is timid and shy.
A. in action
B. in addition
C. in reality
D. in short
答案：
A. in action
B. in addition
(答案→)C. in reality
D. in short
解析： 考查介词短语的用法。 A. in action 在行动中 B. in addition 此外 C. in reality实际上 D. in short 总之这个演员貌似勇猛胆大，但是事实上他胆小羞涩。 根据语意选C
