(1)I am not certain whether he will come.
(2)She seemed to have detected some anger in his voice.
(3)Please do not hesitate to call me if I can be of further assistance.
(4)In short , I am going to live there myself.
A. In other words
B. That is to say
C. In a word
D. To be frank
(5)He has trouble understanding that other people judge him by his social skills and conduct.