问题
选择题
I can't believe what he says because he is _______ changing his mind. .
A．regularly
B．steadily
C．suddenly
D．constantly
答案
答案：D
题目分析:考查副词辨析。A定期地；B稳定地；C突然地；D持续地。根据语境判断D选项正确，因为他不断地改主意才不能相信他，句意：我不能相信他说的话，因为他总是改变主意。