She was terrified of saying something that would make her herself.
A. express
B. conduet
C. impress
D. betray
网友回答
A. express
B. conduet
C. impress
(答案→)D. betray
解析：句意：她害怕说话时露了她的底。betray oneself意思为“露出本来面目；无意中泄露信息”，符合题意。express oneself 表达自己的思想或情感；conduct oneself举止；表现；impress oneself on sth.使自己铭记某事。