Nobody could believe what Chloe says because she is ______ changing her mind.
A.regularly
B.steadily
C.suddenly
D.constantly
网友回答
D解析此题考查副词词义辨析。regularly“有规律地，有规则地，整齐地，匀称地”；steadily“稳定地，有规则地”；suddenly“突然地”；constantly“不断地，经常地，坚持不懈地”。句意：没有人相信Chloe的话，因为她经常改变主意。